The O'Neill Men's Reactor II 2mm Back Zip Short Sleeve Spring Wetsuit has you covered while in, under or even out of the water waiting to go back in. This wetsuit offers strategic seamless paddle zones, hidden keep pocket, YKK back zip system, Krypto Knee Padz protection, cold water protection along with wind and UV protection. Constructed with 30% FluidFlex/70% Fluid Foam - FluidFlex at sleeves and Fluid Foam at chest and back. Whether you aresurfing, free diving or scuba diving make sure you wrap yourself in the O'Neill Men's Reactor II 2mm Back Zip Short Sleeve Spring Wetsuit.