How to measure:
- Chest: With your arms relaxed by your side, measure around the fullest part of your chest.
- Waist: Measure around your natural waistline.
- Hips: Measure around the fullest part at the top of your hips.
Men's tops
O'Neill product size |
EU size |
UK size |
Chest (cm) |
Waist (cm) |
XS |
32/34 |
6 |
87-92 |
72-77 |
S |
34/36 |
8 |
93-97 |
78-82 |
M |
38 |
10 |
98-102 |
83-87 |
L |
40/42 |
12 |
103-107 |
88-93 |
XL |
42/44 |
14 |
108-114 |
94-99 |
XXL |
44/46 |
16 |
115-122 |
100-107 |
Men's bottoms
O'Neill product size |
EU size |
UK size |
Pant size (inches) |
Waist (cm) |
Hip (cm) |
XS |
32/34 |
6 |
28-29 |
72-77 |
87-91 |
S |
34/36 |
8 |
30-31 |
78-82 |
92-96 |
M |
38 |
10 |
32-33 |
83-87 |
97-101 |
L |
40/42 |
12 |
34 |
88-93 |
102-106 |
XL |
42/44 |
14 |
36 |
94-99 |
107-112 |
XXL |
44/46 |
16 |
38 |
100-105 |
113-118 |
Men's footwear
O'Neill product size (EU) |
UK size |
USA size |
Footwear length (cm) |
39 |
6 |
7 |
2.60 |
40 |
7 |
8 |
2.67 |
41 |
7/8 |
8/9 |
2.74 |
42 |
8 |
9 |
2.80 |
43 |
9 |
10 |
2.87 |
44 |
10 |
11 |
2.94 |
45 |
11 |
12 |
3.00 |
46 |
12 |
13 |
3.07 |
47 |
13 |
14 |
3.14 |
Men's wetsuits
If your measurements border on the top end of your chosen size, go for the next size up. Check out our complete collection of men's wetsuits!
O'Neill product 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 |
Men's skins & UV protection
O'Neill product 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 |
Men's impact vests
O'Neill product 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 |
Men's wetsuit boots
O'Neill product size |
EU size |
UK size |
NEOSOCK |
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 |
Men's wetsuit hoods & caps
O'Neill product size |
Neck (cm) |
Head (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 |
Men's wetsuit gloves
- Hand Length: Measurement from the bottom of your palm (where it meets your wrist) to the top of your finger.
- Circumference: Measurement of the circumference of your hand from the first knuckle line, do not include the thumb.
O'Neill product size |
Hand length (cm) |
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 |
Women's Size Chart
How to measure:
- Chest: With your arms relaxed by your side, measure around the fullest part of your chest.
- Waist: Measure around your natural waistline.
- Hips: Measure around the fullest part at the top of your hips.
Women's tops
O'Neill product size |
EU size |
UK size |
Chest (cm) |
Waist (cm) |
XS |
32/34 |
6 |
80-84 |
60-64 |
S |
34/36 |
8 |
85-89 |
65-69 |
M |
38 |
10 |
90-94 |
70-74 |
L |
40/42 |
12 |
95-99 |
75-79 |
XL |
42/44 |
14 |
100-104 |
80-84 |
Women's bottoms
O'Neill product size |
EU size |
UK size |
Pant size (inches) |
Waist (cm) |
Hip (cm) |
XS |
32/34 |
XS |
25-26 |
60-64 |
86-90 |
S |
34/36 |
S |
27-28 |
65-69 |
91-95 |
M |
38 |
M |
29-30 |
70-74 |
96-100 |
L |
40/42 |
L |
31-32 |
75-79 |
101-105 |
XL |
42/44 |
XL |
33-34 |
80-84 |
106-110 |
Women's bikini tops
O'Neill product size |
Int. |
EU bra size |
UK bra size |
FRA bra size |
ES bra size |
IT bra size |
Chest (cm) |
Underbust (cm) |
34B |
XS |
65B |
30B |
80B |
80B |
0B |
79-81 |
63-67 |
34C |
XS |
65C |
30C |
80C |
80C |
0C |
81-83 |
63-67 |
34D |
XS |
65D |
30D |
80D |
80D |
0D |
83-85 |
63-67 |
36B |
S |
70B |
32B |
85B |
85B |
1B |
84-86 |
68-72 |
36C |
S |
70C |
32C |
85C |
85C |
1C |
86-88 |
68-72 |
36D |
S |
70D |
32D |
85D |
85D |
1D |
88-90 |
68-72 |
36E |
S |
70E |
32E |
85E |
85E |
1E |
90-92 |
68-72 |
38B |
M |
75B |
34B |
90B |
90B |
2B |
89-91 |
73-77 |
38C |
M |
75C |
34C |
90C |
90C |
2C |
91-93 |
73-77 |
38D |
M |
75D |
34D |
90D |
90D |
2D |
93-95 |
73-77 |
38E |
M |
75E |
34E |
90E |
90E |
2E |
95-97 |
73-77 |
40B |
L |
80B |
36B |
95B |
95B |
3B |
94-96 |
78-82 |
40C |
L |
80C |
36C |
95C |
95C |
3C |
96-98 |
78-82 |
40D |
L |
80D |
36D |
95D |
95D |
3D |
98-100 |
78-82 |
40E |
L |
80E |
36E |
95E |
95E |
3E |
100-102 |
78-82 |
42B |
XL |
85B |
38B |
100B |
100B |
4B |
99-101 |
83-87 |
42C |
XL |
85C |
38C |
100C |
100C |
4C |
101-103 |
83-87 |
42D |
XL |
85D |
38D |
100D |
100D |
4D |
103-105 |
83-87 |
42E |
XL |
85E |
38E |
100E |
100E |
4E |
105-107 |
83-87 |
44B |
XXL |
90B |
40B |
105B |
105B |
5B |
104-106 |
88-92 |
44C |
XXL |
90C |
40C |
105C |
105C |
5C |
106-108 |
88-92 |
44D |
XXL |
90D |
40D |
105D |
105D |
5D |
108-110 |
88-92 |
44E |
XXL |
90E |
40E |
105E |
105E |
5E |
110-112 |
88-92 |
Women's bikini bottoms
O'Neill product size (EU) |
Int. |
UK size |
FRA size |
ES size |
IT size |
Waist (cm) |
Hip (cm) |
34 |
XS |
8 |
36 |
36 |
40 |
62-66 |
88-92 |
36 |
S |
10 |
38 |
38 |
42 |
66-70 |
92-96 |
38 |
M |
12 |
40 |
40 |
44 |
70-74 |
96-100 |
40 |
L |
14 |
42 |
42 |
46 |
74-78 |
100-104 |
42 |
XL |
16 |
44 |
44 |
48 |
78-82 |
104-108 |
44 |
XXL |
46 |
46 |
46 |
50 |
82-86 |
108-112 |
Women's footwear
O'Neill product size (EU) | UK size | USA size | Footwear length closed-toe (cm) | Footwear length sandals (cm) |
36 | 3/4 | 5/6 | 23.4 | 24.0 |
37 | 4 | 6 | 24.0 | 24.7 |
38 | 5 | 7 | 24.7 | 25.4 |
39 | 6 | 8 | 25.4 | 26.0 |
40 | 7 | 9 | 26.0 | 26.7 |
41 | 7/8 | 9/10 | 26.7 | 27.4 |
42 | 8 | 10 | 27.4 | 28.0 |
Women's wetsuits
If your measurements border on the top end of your chosen size, go for the next size up. Check out our complete collection women's wetsuits!
O'Neill product 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 |
Women's skins & UV protection
O'Neill product 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 |
Women's impact vests
O'Neill product size |
Weight (cm) |
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 |
Women's wetsuit boots
O'Neill product size |
EU size |
UK size |
NEOSOCK |
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 |
Women's wetsuit hoods & caps
O'Neill product size |
Neck (cm) |
Head (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 |
Women's wetsuit gloves
- Hand length: Measurement from the bottom of your palm (where it meets your wrist) to the top of your finger.
- Circumference: Measurement of the circumference of your hand from the first knuckle line, do not include the thumb.
O'Neill product size |
Hand length (cm) |
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 |
Kids Size Chart
How to measure:
- Chest: With your arms relaxed by your side, measure around the fullest part of your chest.
- Waist: Measure around your natural waistline.
- Hips: Measure around the fullest part at the top of your hips.
Boys tops & bottoms
Age |
Product Size (EU) |
Chest Size (cm) |
Waist Size (cm) |
Hip Size (cm) |
1.5-2 |
92 |
54 |
49 |
54 |
2-3 |
98 |
55 |
50 |
56 |
3-4 |
104 |
56 |
51 |
58 |
5-6 |
116 |
58 |
53 |
62 |
7-8 |
128 |
62 |
56 |
66 |
9-10 |
140 |
66 |
59 |
70 |
11-12 |
152 |
72 |
64 |
76 |
13-14 |
164 |
78 |
69 |
82 |
14-15 |
176 |
84 |
74 |
88 |
Girls tops & bottoms
Age |
Product Size (EU) |
Chest Size (cm) |
Waist Size (cm) |
Hip Size (cm) |
1.5-2 |
92 |
52 |
51 |
54 |
2-3 |
98 |
54 |
52 |
56 |
3-4 |
104 |
56 |
53 |
58 |
5-6 |
116 |
60 |
55 |
62 |
7-8 |
128 |
64 |
57 |
66 |
9-10 |
140 |
70 |
60 |
73 |
11-12 |
152 |
76 |
63 |
80 |
13-14 |
164 |
82 |
67 |
87 |
14-15 |
176 |
88 |
71 |
94 |
Kids footwear
O'Neill product size (EU) | UK size | USA size | Footwear length closed-toe (cm) | Footwear length sandals (cm) |
30 | 11/12 | 12/13 | 19.4 | 20.0 |
31 | 12 | 13 | 20.0 | 20.7 |
32 | 13 | 1 | 20.7 | 21.4 |
33 | 1 | 2 | 21.4 | 22.0 |
34 | 2 | 3 | 22.0 | 22.7 |
35 | 2/3 | 3/4 | 22.7 | 23.4 |
36 | 3/4 | 4/5 | 23.4 | 24.0 |
37 | 4 | 5 | 24.0 | 24.7 |
38 | 5 | 6 | 24.7 | 25.4 |
39 | 6 | 7 | 25.4 | 26.0 |
Kids wetsuits
If your measurements border on the top end of your chosen size, go for the next size up. Check out our collection of kids' wetsuits!
O'Neill product size |
Length (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 |
Kids skins & UV-protection
O'Neill product 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 |
Kids impact vests
O'Neill product size |
Weight (kg) |
Chest (cm) |
8 |
27-34 |
66-71 |
10 |
34-41 |
71-76 |
12 |
41-48 |
74-79 |
14 |
48-54.5 |
79-84 |
16 |
54.5-61 |
84-89 |
Kids wetsuit boots
Please note that our wetsuit boots are listed in US size. Convert your size in the chart below.
O'Neill product size (US) |
EU size |
UK size |
XS |
26-27 |
7-8 |
S |
28-29 |
9-10 |
M |
30-31 |
11-12 |
L |
32-33 |
13-1 |
XL |
34-35 |
2-3 |
Kids wetsuit hoods & caps
O'Neill product size |
Neck (cm) |
Head (cm) |
10 |
31.5-34 |
55-58 |
12 |
33-35.5 |
57-59.5 |
14 |
34-37 |
57.5-60 |
16 |
35.5-38 |
58-61 |
Kids wetsuit gloves
- Hand length: Measurement from the bottom of your palm (where it meets your wrist) to the top of your finger.
- Circumference: Measurement of the circumference of your hand from the first knuckle line, do not include the thumb.
O'Neill product size |
Hand length (cm) |
Circumference (cm) |
S |
14.6-15.9 |
15.2-16.5 |
M |
15.2-16.5 |
15.9-17.1 |
L |
15.9-17.1 |
16.5-17.8 |
XL |
16.5-17.8 |
17.1-18.4 |