Wetsuit Features 100% StretchFlight x2 neoprene - warm, light, & flexible Thermal smoothie on chest & back panels provide ultimate sun heat capture & retention Warmflight Far Infrared x1 thermal lining covers chest & back GBS glued and blind stitched seams with back zip entry system and YKK#10(R) metal zip Supratex knee pads are durable, lightweight, & flexible Hydrowrap x2 adjustable neck closure and Hydroshield water barrier keeps water out and warmth in Suitable for suggested temps of 11C-14C / 51F-58F Material Composition: 83% Nylon, 17% Elastane Weight: 1150 gr.