CHECK THE SIZE CHART (in the image section above) The Women's Dare2Tri to Swim is packed with features specifically designed to improve and ease breast stroke swimming. The Black and Orange wetsuit uses high quality neoprene and specially constructed high stretch shoulders, arms and less buoyant lower body panels provides enhance breast stroke body positioning. The smooth skin surface coating improves hydrodynamics without compromising on comfort. more information  Specifications: -2.0mm under arms and 2.5mm arms construction-1.5mm calfs and kneepits panels-39Cell neoprene-Smooth Skin Surface coating-Uniquely neck closure-YKK Stainless Steel bottom-up runner zipper Features:  Thinner 2.0mm Under Arms, 2.5mm Arms and ShouldersA 4-way stretch nylon that not only soft but very durable is used for the under arm construction. The shoulders and arms are made of a 2.5mm thick smooth skin neoprene giving the swimmer improved 360° rotation of the arm and allowing the swimmer to reach further with less effort. This benefit is multiplied as it reduces upper body fatigue over longer distances.  Thinner 1.5mm Calf and KneepitsThe thinner panels provide more flexibility and freedom during the kick and the lower buoyancy improve the body positioning for the breast stroke.  Collar 2.0mmThe collar is designed to minimise water ingress, made of a single layer which can be cut with scissors to your personal perfect fit if needed, the collar provides no chafing.  Unique Neck ClosureThe Velcro closure on the rear is reversed so in the event the suit is closed incorrectly, only the soft material touches the skin.  YKK ZipperThe world's 1 zipper brand is utilised with a stainless steel runner. The zipper runs in a bottom-up configuration.