2mm ELASTEK Full Stretch Neoprene waist and ankle stirrups for comfort and sealing; Sewn-in molded closure with embossed pattern for grip; High-cut waist keeps the pants in place; Foot stirrups to ensure pants stay in place; OMNIRED Technology; 3-Layer Fabric Technology; 4-Way Stretch; 3D Pattern for optimal shape and fit; ExoWear slows thermal loss by 36% at 1ATM of pressure (proven in controlled lab thermal testing); Flat seam stitching throughout for maximum flexibility, stretch and comfort