The Psycho Tech wetsuit now has Technobutter 4 and the nice and toasty TB4-Air Firewall. A perfect balance of warmth and flexibility. A 5/4 mm chest zip wetsuit for the ultimate in warmth in even the coldest of waters.

More sizes on the way, contact us for more info.

Availability: 1 In Stock and ready for delivery
Sizes are US unless stated otherwise.


  • Plus 0.5mm for additional warmth
  • Colour: A00 Black
  • Anti-flush barrier (better seal when wiping out)
  • Double super-seal collar construction
  • Drainage holes prevent water from entering suit
  • Recycled materials used in: TB4; TB4X, TB4 Air Firewall, TB4 Firewall
  • Superseal handcuffs
  • Plasma wrist & ankle seals
  • Krypto knee padz
  • Stitch-less glued seams (triple glued)
  • Exterior fluid seam weld
  • Interior recycled TB3X tape
  • TB4 in the arms & shoulders
  • Chest Zip entry with TB4X
  • TB4 Duraskin air firewall in the chest & back
  • TB4 Firewall in the thigh, butt, shins & calves

Free UK Delivery on this product!
Anything in your basket, together with this item, will also qualify for free delivery.*

We offer a fast and efficient worldwide delivery service. Generally all goods ordered before 1pm are sent out on the same day (Mon-Fri).

For International deliveries, the shipping will be calculated at checkout, together with any duties and tax. This ensures you have no unexpected charges when receiving your goods.. We guarantee you will have nothing extra to pay.

Check here for our full delivery information

*Excluding boardbags, bodyboards and surfboards.

Not happy with your product?

No problem at all!

You can return the product up to 30 days after purchase for a no quibble replacement or refund.
Simply fill out the returns form enclosed with your package and send back to us.
info@downthelinesurf.co.uk or ring one of the team on (01736) 757025

Please find our full Returns & Refund Policy here, and our Shipping Policy here. Customer Services can be contacted here.

If you have any questions about the O'Neill Women's Psycho Tech F.U.Z.E. 5/4+mm Wetsuit 22/23 - A00, submit the product question form below and we'll get back to you as soon as possible. Or give us a call on (01736) 757025.