O'Neill Psycho Tech 4/3+mm Wetsuit - Back Zip Size:MT It is the stiffest

It is the stiffest

Stitchless Exterior Fluid Seam Weld Technology with Interior Recycled TBX Tape

If you notice fraying of fabric or straps

LINING: BioFleece thermal neoprene

BEST FOR: 0' to 4' waves

O'Neill Psycho Tech 4/3+mm Wetsuit - Back Zip Size:MT It is the stiffestO'Neill's Psycho Tech range focuses on ultimate warmth and durability with high performance recycled materials and water tight double sealed stitchless seams. Sustainable TB4 Firewall technology radiates throughout with TB4 Duraskin Air Firewall in the chest and back to shield against the cold while retaining and recirculating your body heat. Designed to keep you in the water longer, toasty, and stoked. F. U. Z. E. Closure (Chest Zip) Redzone Water