GUL's Viper- The ultimate wetsuit with no compromise. Packed full of the latest GUL innovations such as the LAVA: Pre-stretched ∞ Infinity fluid stretch neoprene for maximum freedom, FX:LITE: silky smooth, hydrophobic ( i.e. doesn’t hold H2O ) material for full body defence in the harshest of winds and BOLTDRYX lining from chest to knee for ultimate warmth. LAVA FLOW taped construction for a tough waterproof seam with no compromise to stretch and no need for a liquidseal that often ends up cracking for maximum seam durability. The VIPER a serious suit from the cold water specialist, leaders in innovation for over 50 years.