The Xcel Drylock Wetsuit series is one of the best wetsuit lines out there and there's a reason why. The ultimate in warmth and the latest wetsuit technology, these suits possess a variety of awesome features to keep you warm and comfortable in the water. Newer suits are now made with the Thermo Dry Celliant, and 2018 and up versions now have Celliant Black. Celliant is the latest in Xcel technology and works by recycling your body heat into infrared energy thus providing greater warmth, increased endurance, faster recovery, and an increase in performance! All Drylock is made of 100% stretch neoprene and many products feature poly fleece lining for added warmth and protection.