Oâ€Neillâ€s PsychoTech combines O'Neill's exclusive TechnoButter 2 neoprene with TechnoButter 2-Air Firewall insulation Single Fluid Seam Weld and a F.U.Z.E. Closure System. Lighter warmer more insulating and quick drying with improved ease of entry. The PsychoTech is the latest advancement in cold water wetsuit technology from the leaders in innovation for over 60 years. Size: 12,14,one size,10.