Cold water tested, the O'Neill(R) Reactor II Wetsuit covers all bases. With a high-performance fit, this men's suit features an ultra-flex, neoprene construction to keep you comfortable, and an adjustable, super seal neckline to keep cold water out and warmth in. FEATURES: Update on the original O'Neill(R) Reactor Men's full suit High-performance fit Made for wear as a base layer, or layered with other pieces or accessories For wear in 55- 64deg waters Thickness: 3mm neoprene body, 2mm arms and legs Made of ultra-flex neoprene with fluid foam Made with FluidFlex(TM) foam Strategically placed padding for a comfortable design that moves with you Krypto knee pads Super seal neckline keeps water out and warmth in Neck seal adjusts for a custom fit Zips at the back for easy on/off YKK zipper Breathable, flatlock seams for soft stretch comfort Hidden key pocket Designed at O'Neill(R)'s Area 52 Research Facility; tested by riders and athletes O'Neill(R) wetsuits are tested in cold, northern California waters Manufacturer's one-year warranty