ThePsycho Techwetsuit is constructed with super light TechnoButter 3 andAir-Firewall Smoothskin in the chest and back for superior warmth. Featuring a 360 barrier with drain holes, super seal cuffs, plus an extra 0.5mm in thickness.Urethane coated offset zipper teeth and stitch-less seams that are 100% triple glued (TBX3 taped interior seams with an exterior fluid seam weld)keep water out.Made with Aqua Alpha solvent free neoprene lamination.