Order with next working day delivery before 3PM Wednesday 16th April 2025 for delivery before Easter
(When in stock and sent to UK mainland* click HERE for more information).

Port Solent Store / Click & Collect - Open as usual throughout Easter including bank holidays.
See opening times HERE

O’Neill Psycho Tech 4/3+ Chest Zip Full Wetsuit

£429.95 £399.95

Men’s wetsuit sizes chart Have a look at the wetsuit size chart below to find your ideal men’s wetsuit. If your measurements border on the top end of your chosen size, go for the next size up.
Men's wetsuit size Height (cm) Weight (kg) Chest (cm) Waist (cm)
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 wetsuit sizes chart View the size chart below to find your ideal women’s wetsuit. If your measurements border on the top end of your chosen size, go for the next size up.
Women's wetsuit 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 wetsuits size chart Have a look at the wetsuit size chart below to find your ideal kids wetsuit. If the measurements of your child border on the top end of your chosen size, go for the next size up.
Kids wetsuits 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

O’Neill Psycho Tech 4/3+ Chest Zip Full Wetsuit
In-Store Content

Designed to keep you in the water longer, more comfortably, and stoked. Suit up with an all-new Psycho Tech to experience the O’Neill ‘Always Summer on the Inside’ feel even in the coldest conditions.

Features:

Plus 0.5mm for additional warmth
Anti-flush barrier in both zen zip & f.u.z.e.
Drainholes prevent water from entering suit
Recycled materials – tb4; tb4x; tb4 air firewall; tb4 firewall
Superseal hand cuffs
Plasma wrist & ankle seals
Krypto knee padz
Double super-seal collar

Construction:

Stitchless glued seams (triple glued)
Exterior fluid seam weld
Interior recycled tb3x tape
TB4 (recycled material) – arms & shoulders
TB4x (recycled material) – entry
TB4 duraskin (sl) air firewall (recycled materials) – chest & back
TB4 firewall (recycled materials) – thigh, butt, shins & calves