CHECK THE SIZE CHART (in the image section above) The Orca Openwater Core TRN wetsuit is perfect for swimmers who are just starting out with open water swimming. This wetsuit features high flexibility and neutral buoyancy. The high flexibility in the shoulders makes your first workouts in open water wonderfully comfortable, while the buoyancy will keep you feeling secure. For more flexibility in all phases of the swim stroke, the Openwater Core TRN wetsuit uses Yamamoto 39 neoprene in conjunction with 2 mm Infinityskin high-end lining. This material is high elasticity that does not restrict your shoulders or legs when swimming. The Yamamoto 39 technology is also in the torso to ensure sufficient thermal insulation for workouts. Its 3 mm thickness ensures 77% more protection than if you did not wear a wetsuit. This material also gives the TRN an ideal neutral buoyancy for a secure feel. The Infinity Skin 2 inner lining provides a feeling of absolute freedom, designed from a high elasticity nylon incorporating bamboo fibers, this technology is used in the lining of our wetsuit to provide greater flexibility in every stroke. It maintains body heat longer and reduces bad odors and the presence of bacteria in your neoprene. It is also composed of natural and environmentally sustainable materials, to avoid skin irritation and to care for the environment. The combination of laser cutting on the neck and the inverse Velcro reduces friction, preventing any abrasion on the skin. Features: Flexibility Yamamoto 39 neoprene is used together with 2 mm Infinityskin high-end lining. This material has high elasticity that allows it to be used in different areas of mid-range wetsuits. This material requires between 45% and 35% less force to stretch than conventional neoprene. The Yamamoto 39 technology is also in the torso to ensure sufficient thermal insulation for workouts. Its 3 mm thickness ensures 77% more protection than if you did not wear a wetsuit. The lining in the neck area reduces friction and the likelihood of chafing.