O'Neill Psycho Tech 5/4 mm Back zip Men Blk/Blk

O'Neill Psycho Tech Men 5/4mm wetsuit Back zip

This O'Neill Psychotech suit with all new TechnoButter TB3 and added heat-generating TB Firewall. It is offered in a wide range of styles with the hi-tech features you need to  stay warm in any situation.

Supple, comfortable and warm are the key words of this top suit.

RedZone water resistant zipper

• 360° barrier with drainage holes (FUZE)


• Double Seal Collar


• 50% TB3


• 20% TB Air-Firewall Smoothskin


• 30% TB firewall

FUZE Entry Closure System:

FUZE uses the same zipper technology as our patented ZEN zipper with drainage holes to keep you dry and loose.

TB-Air Firewall Smoothskin:

The most advanced insulating neoprene available. Trapped air technology with quick drying properties. Psychotically warm.

TechnoButter 3:

Buttery soft premium neoprene stretches like a super. Technical yarns and a revolutionary foam core make it light and durable with quick-drying properties.

Fluid Seam Weld:

8mm silcone-based urethane sealed exterior with a triple bonded and blind stitched interior. Waterproof, durable and ultra-flexible seam.