GNU Headspace 155 2025 - Snowboard

Name: GNU Headspace 155 2025 - Snowboard
Brand: GNU
SKU: 20318
Price: 452.11 EUR
Availability: InStock

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Forest Bailey's board is a true twin with C3 and a camber dominant profile: soft but tough, with lots of pop for street, park, rails and buttering. Magne-Traction keeps control on hardpack and ice.

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Size chart

Wetsuits

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.
Waist: measure around your natural waist.

Men's models

The letter after the size indicates height: S – short, T – tall.

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2XS	168-173	52-59	90-93	70-72
XS	170-175	57-64	93-95	72-75
SS	166-171	59-68	95-99	75-79
S	173-178	61-70	95-99	75-79
ST	183-188	66-75	95-99	75-79
MS	169-174	66-75	99-104	79-84
M	175-180	70-77	99-104	79-84
MT	185-191	73-82	99-104	79-84
LS	171-177	73-82	104-110	84-89
L	178-183	77-86	104-110	84-89
LT	188-193	82-91	104-110	84-89
XLS	174-179	82-91	110-117	89-94
XL	180-185	86-95	110-117	89-94
XLT	191-196	91-100	110-117	89-94
2XL	183-188	95-104	117-123	94-99
3XL	183-191	104-113	123-130	99-112
4XL	185-193	113-122	130-136	112-122

Women's models

The letter after the size indicates height: S – short, T – tall.

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2	155-160	41-48	76-81	62-67
4	160-165	45-52	77-83	64-69
6S	159-164	48-54	80-85	66-71
6	163-168	50-57	80-85	66-71
6T	166-171	52-59	80-85	66-71
8S	161-166	52-59	83-88	69-74
8	165-170	54-61	83-88	69-74
8T	169-174	57-64	83-88	69-74
10S	164-169	57-66	86-91	74-77
10	168-173	59-68	86-91	74-77
10T	171-177	61-70	86-91	74-77
12	170-175	64-73	90-95	77-81
14	173-178	68-77	94-99	79-85
16	175-180	75-84	98-103	85-89

Kids' models

Kids' sizes are by age: 8 = 8Y = 8 years.

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
1	88-98	11-13.5	48-53	45.5-51
2	98-108	13.5-16	51-56	48-53
3	108-118	16-18	53-58	51-56
4	118-126	18-25	58-64	51-56
6	126-133	22.5-29.5	62-67	55-60
8	133-141	27-34	66-71	58-64
10	141-147	34-41	71-76	58-64
12	147-155	41-48	74-79	64-69
14	155-163	48-54.5	79-84	69-74
16	163-170	54.5-61	84-89	71-76

Rash guards and UV protection tops

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.
Waist: measure around your natural waist.

Men's models

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2XS	168-173	52-59	90-93	70-72
XS	170-175	57-64	93-95	72-75
S	173-178	61-70	95-99	75-79
M	175-180	70-77	99-104	79-84
L	178-183	77-86	104-110	84-89
XL	180-185	86-95	110-117	89-94
2XL	183-188	95-104	117-123	94-99
3XL	183-191	104-113	123-130	99-112

Women's models

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2XS	160-165	45-52	77-83	64-69
XS	163-168	50-57	80-85	66-71
S	165-170	54-61	83-88	69-74
M	168-173	59-68	86-91	74-77
L	170-175	64-73	90-95	77-81
XL	173-178	68-77	94-99	79-85
2XL	175-180	75-84	98-103	85-89

Kids' models

Kids' sizes are by age: 8 = 8Y = 8 years. 6M, 12M, 18M are in months.

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
6M	58-68.5	5-7.5	43	42-44.5
12M	68.5-73.5	7.5-10	46	44.5-47
18M	73.5-79	10-12	48	47-49.5
1	88-98	11-13.5	48-53	45.5-51
2	98-108	13.5-16	51-56	48-53
3	108-118	16-18	53-58	51-56
4	118-126	18-25	58-64	51-56
6	126-133	22.5-29.5	62-67	55-60
8	133-141	27-34	66-71	58-64
10	141-147	34-41	71-76	58-64
12	147-155	41-48	74-79	64-69
14	155-163	48-54.5	79-84	69-74
16	163-170	54.5-61	84-89	71-76

Neoprene boots

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

O'Neill size	EU size	UK size	NEOSOCK neoprene sock
5	36	4	XS
6	37/38	5	XS
7	39	6	S
8	40	7	S
9	41/42	8	M
10	43	9	M
11	44	10	L
12	45	11	L
13	46	12	XL
14	47/48	13	XL

Neoprene hoods and caps

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

O'Neill size	Neck circumference (cm)	Head circumference (cm)
XS	36-38	48-53
S	37-39	51-56
M	38-41	53-58
L	39-42	56-61
XL	41-43	58-64
2XL	42-44	61-66

Neoprene gloves

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

Hand length: from the base of the palm (at the wrist) to the tip of the middle finger.
Hand circumference: across the knuckles, excluding the thumb.

O'Neill size	Hand length (cm)	Hand circumference (cm)
2XS	15.2-16.5	16.5-17.8
XS	16.5-17.8	17.8-19.1
S	17.8-19.1	19.1-20.3
M	19.1-20.3	20.3-21.6
L	20.3-21.6	21.6-22.9
XL	21.6-22.9	22.9-24.1
2XL	22.9-24.1	24.1-25.4

Impact vests

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.

Men's and unisex models

O'Neill size	Weight (kg)	Chest (cm)
XS	57-64	93-95
S	61-70	95-99
M	70-77	99-104
L	77-86	104-110
XL	86-95	110-117
2XL	95-104	117-123
3XL	104-113	123-130

Women's models

O'Neill size	Weight (kg)	Chest (cm)
4	45-52	77-83
6	50-57	80-85
8	54-61	83-88
10	59-68	86-91
12	64-73	90-95

ISO 50N life vests

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

ISO 50N vests (Superlite, Multisport) are unisex. Choose the size by weight and chest.

Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.

O'Neill size	Weight (kg)	Chest (cm)
XS	40-50	70-80
S	50-60	80-90
M	60-70	90-100
L	> 70	100-110
XL	> 70	110-120
2XL	> 70	120-130
3XL	> 70	130-140

TOBE apparel: jackets, bibs, pants

This chart is from the manufacturer, TOBE. If your measurements fall between two sizes, take the larger one.

Height: barefoot, from the floor to the top of your head.
Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.
Waist: measure around your natural waist.
Hips: around the fullest part of your hips.
Inseam: from the crotch to the floor, barefoot.

XXS = 2XS, XXL = 2XL.

Men's and unisex models

Size	Height (cm)	Chest (cm)	Waist (cm)	Hips (cm)	Inseam (cm)
2XS	163-169	81-86	67-72	82-87	78-82
XS	166-173	86-91	72-77	87-92	80-84
S	170-177	91-96	77-83	92-97	82-86
M	174-182	96-101	83-90	97-103	84-88
L	179-186	101-108	90-98	103-110	86-90
XL	183-191	108-115	98-106	110-117	88-92
2XL	188-195	115-123	106-115	117-125	90-94

Women's models (Ekta)

Size	Height (cm)	Chest (cm)	Waist (cm)	Hips (cm)	Inseam (cm)
2XS	158-162	78-85	63-69	84-89	76-80
XS	159-167	85-90	69-74	89-95	78-82
S	164-172	90-96	74-79	95-102	80-84
M	169-179	96-103	79-85	102-109	82-86
L	176-183	103-111	85-93	109-117	84-88

Ski and snowboard helmets

This chart is from the manufacturer, Smith. If your measurements fall between two sizes, take the larger one.

Head circumference: with a tape measure around your head, about 2 cm above the eyebrows and ears, across the widest part of the back of the head.

Round Contour Fit is a cut for a rounder head; its range is one size up. Racing models and the women's Vida in size L are 59-61 cm.

Size	Head circumference (cm)
S	51-55
S – Round Contour Fit	55-59
M	55-59
M – Round Contour Fit	59-63
L	59-63
L – racing models	59-61
L – Vida	59-61
L – Round Contour Fit	63-67
XL	63-67

Bike helmets

This chart is from the manufacturer, Smith. If your measurements fall between two sizes, take the larger one.

Head circumference: with a tape measure around your head, about 2 cm above the eyebrows and ears, across the widest part of the back of the head.

Size	Head circumference (cm)
XS	48-52
S	51-55
M	55-59
L	59-62
XL	61-65

Snowboard boots

This chart is from the manufacturer, Northwave. If your measurements fall between two sizes, take the larger one.

Foot length (mondo): stand on a sheet of paper, mark your heel and your longest toe, and measure the distance. Mondo is this length, in mm or cm depending on the column.

Our shoe sizes are given in mondo / EU / US. The US size differs between men's and women's models – match by mondo or EU.

Mondo (mm)	EU	US men's	US women's
220	34	3	5
225	35	4.5	5.5
230	36	5	6
235	37	5.5	6.5
240	37.5	6	7
245	38	6.5	7.5
250	39	7	8
255	40	7.5	8.5
260	40.5	8	9
265	41	8.5	9.5
270	42	9	10
275	42.5	9.5	10.5
280	43	10	11
285	43.5	10.5	11.5
290	44	11	–
295	45	11.5	–
300	46	12	–
305	47	13	–
310	48	14	–
315	49	15	–

Step On: boots and bindings

This chart is from the manufacturer, Burton. If your measurements fall between two sizes, take the larger one.

Foot length (mondo): stand on a sheet of paper, mark your heel and your longest toe, and measure the distance. Mondo is this length, in mm or cm depending on the column.

Step On bindings work only with Step On boots, and vice versa. Men's and women's Step On parts cannot be mixed – this can cause damage and put your safety at risk.

Men's boots

US men's	EU	UK	Mondo (cm)
6	38	5	24
6.5	39	5.5	24.5
7	40	6	25
7.5	40.5	6.5	25.5
8	41	7	26
8.5	41.5	7.5	26.5
9	42	8	27
9.5	42.5	8.5	27.5
10	43	9	28
10.5	43.5	9.5	28.5
11	44	10	29
11.5	44.5	10.5	29.5
12	45	11	30
13	46	12	31
14	47	13	32
15	48	14	33

Women's boots

US women's	EU	UK	Mondo (cm)
4	34	2	21
5	35	3	22
5.5	36	3.5	22.5
6	36.5	4	23
6.5	37	4.5	23.5
7	38	5	24
7.5	39	5.5	24.5
8	40	6	25
8.5	40.5	6.5	25.5
9	41	7	26
9.5	41.5	7.5	26.5
10	42	8	27
10.5	42.5	8.5	27.5
11	43	9	28

Men's Step On bindings

Binding size	US men's shoe	EU shoe	UK shoe	Mondo (cm)
S	6-8	38-41	5-7	24-26
M	8.5-10.5	41.5-43.5	7.5-9.5	26.5-28.5
L	11-13	44-46	10-12	29-31
XL	14-15	47-48	13-14	32-33

Women's Step On bindings

Binding size	US women's shoe	EU shoe	UK shoe	Mondo (cm)
S	5-6	35-36.5	3-4	22-23
M	6.5-8.5	37-40.5	4.5-6.5	23.5-25.5
L	9-11	41-42	7-8	26-27

Hitchhiker splitboard bindings

This chart is from the manufacturer, Burton. If your measurements fall between two sizes, take the larger one.

Foot length (mondo): stand on a sheet of paper, mark your heel and your longest toe, and measure the distance. Mondo is this length, in mm or cm depending on the column.

Binding size	US men's shoe	US women's shoe	EU shoe	Mondo (cm)
XS	6-7	6-8	36-38.5	23.5-25
S	7-8	8-10	38.5-41	25-26
M	8-10.5	10+	42+	26-28
L	11+	–	43.5+	28+

Size chart

Wetsuits

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.
Waist: measure around your natural waist.

Men's models

The letter after the size indicates height: S – short, T – tall.

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2XS	168-173	52-59	90-93	70-72
XS	170-175	57-64	93-95	72-75
SS	166-171	59-68	95-99	75-79
S	173-178	61-70	95-99	75-79
ST	183-188	66-75	95-99	75-79
MS	169-174	66-75	99-104	79-84
M	175-180	70-77	99-104	79-84
MT	185-191	73-82	99-104	79-84
LS	171-177	73-82	104-110	84-89
L	178-183	77-86	104-110	84-89
LT	188-193	82-91	104-110	84-89
XLS	174-179	82-91	110-117	89-94
XL	180-185	86-95	110-117	89-94
XLT	191-196	91-100	110-117	89-94
2XL	183-188	95-104	117-123	94-99
3XL	183-191	104-113	123-130	99-112
4XL	185-193	113-122	130-136	112-122

Women's models

The letter after the size indicates height: S – short, T – tall.

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2	155-160	41-48	76-81	62-67
4	160-165	45-52	77-83	64-69
6S	159-164	48-54	80-85	66-71
6	163-168	50-57	80-85	66-71
6T	166-171	52-59	80-85	66-71
8S	161-166	52-59	83-88	69-74
8	165-170	54-61	83-88	69-74
8T	169-174	57-64	83-88	69-74
10S	164-169	57-66	86-91	74-77
10	168-173	59-68	86-91	74-77
10T	171-177	61-70	86-91	74-77
12	170-175	64-73	90-95	77-81
14	173-178	68-77	94-99	79-85
16	175-180	75-84	98-103	85-89

Kids' models

Kids' sizes are by age: 8 = 8Y = 8 years.

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
1	88-98	11-13.5	48-53	45.5-51
2	98-108	13.5-16	51-56	48-53
3	108-118	16-18	53-58	51-56
4	118-126	18-25	58-64	51-56
6	126-133	22.5-29.5	62-67	55-60
8	133-141	27-34	66-71	58-64
10	141-147	34-41	71-76	58-64
12	147-155	41-48	74-79	64-69
14	155-163	48-54.5	79-84	69-74
16	163-170	54.5-61	84-89	71-76

Rash guards and UV protection tops

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.
Waist: measure around your natural waist.

Men's models

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2XS	168-173	52-59	90-93	70-72
XS	170-175	57-64	93-95	72-75
S	173-178	61-70	95-99	75-79
M	175-180	70-77	99-104	79-84
L	178-183	77-86	104-110	84-89
XL	180-185	86-95	110-117	89-94
2XL	183-188	95-104	117-123	94-99
3XL	183-191	104-113	123-130	99-112

Women's models

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
2XS	160-165	45-52	77-83	64-69
XS	163-168	50-57	80-85	66-71
S	165-170	54-61	83-88	69-74
M	168-173	59-68	86-91	74-77
L	170-175	64-73	90-95	77-81
XL	173-178	68-77	94-99	79-85
2XL	175-180	75-84	98-103	85-89

Kids' models

Kids' sizes are by age: 8 = 8Y = 8 years. 6M, 12M, 18M are in months.

O'Neill size	Height (cm)	Weight (kg)	Chest (cm)	Waist (cm)
6M	58-68.5	5-7.5	43	42-44.5
12M	68.5-73.5	7.5-10	46	44.5-47
18M	73.5-79	10-12	48	47-49.5
1	88-98	11-13.5	48-53	45.5-51
2	98-108	13.5-16	51-56	48-53
3	108-118	16-18	53-58	51-56
4	118-126	18-25	58-64	51-56
6	126-133	22.5-29.5	62-67	55-60
8	133-141	27-34	66-71	58-64
10	141-147	34-41	71-76	58-64
12	147-155	41-48	74-79	64-69
14	155-163	48-54.5	79-84	69-74
16	163-170	54.5-61	84-89	71-76

Neoprene boots

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

O'Neill size	EU size	UK size	NEOSOCK neoprene sock
5	36	4	XS
6	37/38	5	XS
7	39	6	S
8	40	7	S
9	41/42	8	M
10	43	9	M
11	44	10	L
12	45	11	L
13	46	12	XL
14	47/48	13	XL

Neoprene hoods and caps

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

O'Neill size	Neck circumference (cm)	Head circumference (cm)
XS	36-38	48-53
S	37-39	51-56
M	38-41	53-58
L	39-42	56-61
XL	41-43	58-64
2XL	42-44	61-66

Neoprene gloves

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

Hand length: from the base of the palm (at the wrist) to the tip of the middle finger.
Hand circumference: across the knuckles, excluding the thumb.

O'Neill size	Hand length (cm)	Hand circumference (cm)
2XS	15.2-16.5	16.5-17.8
XS	16.5-17.8	17.8-19.1
S	17.8-19.1	19.1-20.3
M	19.1-20.3	20.3-21.6
L	20.3-21.6	21.6-22.9
XL	21.6-22.9	22.9-24.1
2XL	22.9-24.1	24.1-25.4

Impact vests

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.

Men's and unisex models

O'Neill size	Weight (kg)	Chest (cm)
XS	57-64	93-95
S	61-70	95-99
M	70-77	99-104
L	77-86	104-110
XL	86-95	110-117
2XL	95-104	117-123
3XL	104-113	123-130

Women's models

O'Neill size	Weight (kg)	Chest (cm)
4	45-52	77-83
6	50-57	80-85
8	54-61	83-88
10	59-68	86-91
12	64-73	90-95

ISO 50N life vests

This chart is from the manufacturer, O'Neill. If your measurements fall between two sizes, take the larger one.

ISO 50N vests (Superlite, Multisport) are unisex. Choose the size by weight and chest.

Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.

O'Neill size	Weight (kg)	Chest (cm)
XS	40-50	70-80
S	50-60	80-90
M	60-70	90-100
L	> 70	100-110
XL	> 70	110-120
2XL	> 70	120-130
3XL	> 70	130-140

TOBE apparel: jackets, bibs, pants

This chart is from the manufacturer, TOBE. If your measurements fall between two sizes, take the larger one.

Height: barefoot, from the floor to the top of your head.
Chest: with your arms relaxed at your sides, measure around the fullest part of your chest.
Waist: measure around your natural waist.
Hips: around the fullest part of your hips.
Inseam: from the crotch to the floor, barefoot.

XXS = 2XS, XXL = 2XL.

Men's and unisex models

Size	Height (cm)	Chest (cm)	Waist (cm)	Hips (cm)	Inseam (cm)
2XS	163-169	81-86	67-72	82-87	78-82
XS	166-173	86-91	72-77	87-92	80-84
S	170-177	91-96	77-83	92-97	82-86
M	174-182	96-101	83-90	97-103	84-88
L	179-186	101-108	90-98	103-110	86-90
XL	183-191	108-115	98-106	110-117	88-92
2XL	188-195	115-123	106-115	117-125	90-94

Women's models (Ekta)

Size	Height (cm)	Chest (cm)	Waist (cm)	Hips (cm)	Inseam (cm)
2XS	158-162	78-85	63-69	84-89	76-80
XS	159-167	85-90	69-74	89-95	78-82
S	164-172	90-96	74-79	95-102	80-84
M	169-179	96-103	79-85	102-109	82-86
L	176-183	103-111	85-93	109-117	84-88

Ski and snowboard helmets

This chart is from the manufacturer, Smith. If your measurements fall between two sizes, take the larger one.

Head circumference: with a tape measure around your head, about 2 cm above the eyebrows and ears, across the widest part of the back of the head.

Round Contour Fit is a cut for a rounder head; its range is one size up. Racing models and the women's Vida in size L are 59-61 cm.

Size	Head circumference (cm)
S	51-55
S – Round Contour Fit	55-59
M	55-59
M – Round Contour Fit	59-63
L	59-63
L – racing models	59-61
L – Vida	59-61
L – Round Contour Fit	63-67
XL	63-67

Bike helmets

This chart is from the manufacturer, Smith. If your measurements fall between two sizes, take the larger one.

Head circumference: with a tape measure around your head, about 2 cm above the eyebrows and ears, across the widest part of the back of the head.

Size	Head circumference (cm)
XS	48-52
S	51-55
M	55-59
L	59-62
XL	61-65

Snowboard boots

This chart is from the manufacturer, Northwave. If your measurements fall between two sizes, take the larger one.

Foot length (mondo): stand on a sheet of paper, mark your heel and your longest toe, and measure the distance. Mondo is this length, in mm or cm depending on the column.

Our shoe sizes are given in mondo / EU / US. The US size differs between men's and women's models – match by mondo or EU.

Mondo (mm)	EU	US men's	US women's
220	34	3	5
225	35	4.5	5.5
230	36	5	6
235	37	5.5	6.5
240	37.5	6	7
245	38	6.5	7.5
250	39	7	8
255	40	7.5	8.5
260	40.5	8	9
265	41	8.5	9.5
270	42	9	10
275	42.5	9.5	10.5
280	43	10	11
285	43.5	10.5	11.5
290	44	11	–
295	45	11.5	–
300	46	12	–
305	47	13	–
310	48	14	–
315	49	15	–

Step On: boots and bindings

This chart is from the manufacturer, Burton. If your measurements fall between two sizes, take the larger one.

Foot length (mondo): stand on a sheet of paper, mark your heel and your longest toe, and measure the distance. Mondo is this length, in mm or cm depending on the column.

Step On bindings work only with Step On boots, and vice versa. Men's and women's Step On parts cannot be mixed – this can cause damage and put your safety at risk.

Men's boots

US men's	EU	UK	Mondo (cm)
6	38	5	24
6.5	39	5.5	24.5
7	40	6	25
7.5	40.5	6.5	25.5
8	41	7	26
8.5	41.5	7.5	26.5
9	42	8	27
9.5	42.5	8.5	27.5
10	43	9	28
10.5	43.5	9.5	28.5
11	44	10	29
11.5	44.5	10.5	29.5
12	45	11	30
13	46	12	31
14	47	13	32
15	48	14	33

Women's boots

US women's	EU	UK	Mondo (cm)
4	34	2	21
5	35	3	22
5.5	36	3.5	22.5
6	36.5	4	23
6.5	37	4.5	23.5
7	38	5	24
7.5	39	5.5	24.5
8	40	6	25
8.5	40.5	6.5	25.5
9	41	7	26
9.5	41.5	7.5	26.5
10	42	8	27
10.5	42.5	8.5	27.5
11	43	9	28

Men's Step On bindings

Binding size	US men's shoe	EU shoe	UK shoe	Mondo (cm)
S	6-8	38-41	5-7	24-26
M	8.5-10.5	41.5-43.5	7.5-9.5	26.5-28.5
L	11-13	44-46	10-12	29-31
XL	14-15	47-48	13-14	32-33

Women's Step On bindings

Binding size	US women's shoe	EU shoe	UK shoe	Mondo (cm)
S	5-6	35-36.5	3-4	22-23
M	6.5-8.5	37-40.5	4.5-6.5	23.5-25.5
L	9-11	41-42	7-8	26-27

Hitchhiker splitboard bindings

This chart is from the manufacturer, Burton. If your measurements fall between two sizes, take the larger one.

Foot length (mondo): stand on a sheet of paper, mark your heel and your longest toe, and measure the distance. Mondo is this length, in mm or cm depending on the column.

Binding size	US men's shoe	US women's shoe	EU shoe	Mondo (cm)
XS	6-7	6-8	36-38.5	23.5-25
S	7-8	8-10	38.5-41	25-26
M	8-10.5	10+	42+	26-28
L	11+	–	43.5+	28+

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The GNU Head Space is a typical GNU freestyle model, built around the style and ideas of Forest Bailey. Forest is one of the snowboarders for whom the line between snowboard and skateboard culture practically disappears: street, park, groomed terrain and natural obstacles become one common playground.

The Head Space is a true twin with a C3 camber dominant profile and a flex of about 5-6/10. The board is relatively soft and flexible, but the camber keeps it lively, springy and full of pop.

The softer construction helps with buttering, on rails and when absorbing heavy landings or rough terrain in the park. At the same time Magne-Traction keeps control on hardpack and ice.

This is a real board for demanding freestyle snowboarders and skaters in the mountains: soft but tough; playful but not characterless.

Key specs: Forest Bailey; true twin; C3; centered stance (no setback); G Lite 2 Aspen / Paulownia; Carbon Power Bands; sintered base; Magne-Traction; park / street / freestyle.

We carry the 2024/25 generation: C3, a pill-shaped twin with a G Lite 2 core of Aspen and Paulownia, as in the text above, but without Carbon Power Bands; the fiberglass is triaxial/biaxial.

Review on the blog: GNU Head Space review: Forest Bailey's freestyle twin

Sizes

Size	Contact length	Waist	Sidecut radius	Stance (min-max / setback)	Flex (1–10)	Rider weight
155 cm	115 cm	25.4 cm	8.2 m	51.5-63.5 / 0 cm	6	from 55 kg

The size is not chosen by length alone. Weight, surface area, waist, profile and effective edge length together tell how a board will work. The table shows the lower weight limit that Mervin gives for each size. A shorter board turns faster and is more playful; a longer one brings more stability and float. The waist should match the boot: at about 24-25 cm the boots are usually up to size 42-43 (EU), at 25-26 cm up to 44-45, and the W versions are for a bigger foot, so that toes and heel do not drag when carving.

Not sure which size? Write to us or stop by our shop in Golo Bardo – we have been riding this stuff since 1997.