NeoSport&';s unparalleled combination of product features and benefits coupled with a focus on efficient manufacturing techniques and material selection has propelled Neo Sport products to be viewed as an exceptional consumer value. 3mm neoprene construction throughout Anatomical fit that &';s easy to swim in Flatlock seam construction which is both highly durable and helps prevent chafing against the skin Heavy duty back zip Adjustable Velcro collar to give divers a secure and comfortable seal at the neck Pull leash to make putting on and taking off easier For Sizing Chart: visit www.neosportusa.com