This is a 7/6mm Bare Velocity Full Progressive Stretch Scuba Diving Wetsuit It Features: 7mm neoprene torso with 6mm arms and lower legs Comfortable contoured 5mm GLIDESKIN collar with Velcro adjustment Heavy-duty back zipper with skin-to-skin internal sealing flap Internal skin-in flip seals at mid-forearm and mid-calf to reduce water entry FORMTEK kneepads provide total flexibility, durability and comfort Anatomically shaped arms, knees and lower legs Heavy-duty ankle zippers for easy donning Loop at base of zipper assists donning Double glued with SECURE-LOCK construction For sizing Click here A progressive-stretch suit that uses varying stretch panels in performance zones of the suit to enhance mobility and comfort. "