The O'Neill™ Men's Psychofreak Zen Zip 4.5 / 3.5 MM Fullsuit has the most advanced Neoprene on the market.

• Psychofreak wetsuit series: lighter, more insulated and dries more quickly.
    - Super minimal seam design.
    - External key pocket with a loop.
    - Plasma wrist and ankle seals.
    - Contortionist seamless shoulder for paddling comfort.
    - Strategic seamless paddle zones.
    - LSD: lumbar seamless design for comfort.  
• Super seal cuffs: O'Neill's best seal.
    - Fused to be low profile at the end of the cuff.
• Patented Z.E.N. zip entry with a drain hole.
    - Beware of imitators.
    - Pullover internal neck seal to keep water out.
    - Maximum performance.
    - If any water penetrates the collar or super short zipper is blocked by the barrier and sent out via the drain hole.
    - Double super seal neck.
• Weld Superseam Stitchless Technology®: double supreme weld.
    - Narrower, urethane seal placed on both sides of a triple-glued seam.
    - Stitchless.
    - Silicone based.
    - 60% thinner and lighter.
• Technobutter air Neoprene: most advanced super stretch Neoprene available.
    - 17% lighter.
    - 30% less water absorption.
    - Quick dry properties.
• Neoprene thickness ranges from 4.5 to 3.5 mm.  
    - Technobutter air: chest, back, thigh and rear.
    - Technobutter Neoprene: arms and lower legs.
    - Krypto knee padz: knees.
    - Glideskin: neck facing.
• Imported.