This is the ScubaPro K2 Light Extreme Steamer Undergarmet for Drysuit Features: Dual fleece material is breathable and stretchy, delivering maximum thermal protection. Compatible with trilaminate drysuits. Steamer design includes anti-squeeze protection padding on shoulders, chest and knees. Storage pockets with zippers are located on both hips. Elastic wrist loops and heel straps prevent ride-up when pulling on a drysuit. Convenient front double slider zipper ensures easy donning and doffing. Holes on legs can be adapted to P valves. Available in seven unisex sizes. The undergarment of choice for drysuit diving, the K2 Extreme is the ultimate in cold-water thermal protection. Sporting a modern eye-catching design and one-piece steamer styling, this undergarment is patterned after the Everflex 1.5mm line. For maximum thermal protection, the undersuit is made of a breathable and stretchy dual fleece material. It includes compression padding on the shoulders, chest and knees for both comfort and protection. The roomy hip pockets secure with zippers, and elastic wrist loops and heel straps enhance fit and prevent ride-up when donning a drysuit. The K2 Extreme can be counted on to always keep you warm and dry.