Scubapro K2 Extreme One-Piece Undersuit - Men\'s 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. Its close fit and make up ensures less air is required to give the same level of warmth with less air migration. The K2 Extreme can be counted on to always keep you warm and dry! Features: Dual fleece material is breathable and stretchy, delivering maximum thermal protection. Maximum thermal protection. The K2 Extreme offers the most thermal protection of the K2 range. 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. The Extreme HD Plush material has 629g/m2 (+/-5%) similar to the K2 but with the addition of 919g/m2 (+/-5% in the chest, shoulder and knee areas. Weigh (Large Size): 3.5lbs  / 1.59Kg