The design criteria were to make the Xenos as easy as possible to get on and off. This is achieved by cut away ankles (inspired by the fast transition features of triathlon suits) and smooth linings in the arms and legs. This suit is perfect for days in and out of the water especially on liveaboards. Comfortable stretch neoprene throughout ensures that the suit fits well, hugging the body and minimizing water flushing through the suit. Double glued and blind-stitched seams combine with internal ankle seals and wrist seals to minimize water ingress. 7mm neoprene with Thermoflex linings on the torso and Glideskin wrist seals ensure that this suit can take you into a cooler comfort zone. Combine the suit with the hooded vest to achieve 10mm protection on the vital body core. Add protection for the head with a 5mm neoprene hood to make this the perfect suit for diving in cooler temperatures. We recommend this combination for water temperatures from 53 - 71 F (12 - 22 C). Includes improved Xenos features: snag-free hook and loop neck closures with improved sealing surfaces to further reduce water ingress. Hardwearing Supratex lined knee panels provide tough, yet comfortable knee protection. Please refer to 4th Element&';s size charts to ensure the best fit for you. Stretch neoprene for optimum fit Designed for rapid donning and doffing Watertight glued and blind stitched seams Thermal lining Wrist seals to minimize water ingress Supratex lined knee panels Flattering lines Internal PU seals at ankle Cutaway ankle for easy donning 90% Neoprene / 10% Nylon