Prices are as marked; discounts vary by size. Sales items are final and cannot be returned or warranted.. Unmatched Warmth and Performance. The Drylock series is the warmest, most comfortable suit in the Xcel lineup, made for the most extreme of conditions. This series offers water-tight construction with unparalleled warmth. The Drylock offers Celliant Black in the Core, Ultra Stretch infrared to maximize performance, and Channel Flex exterior to create the highest-level warmth and performance in our 6/5mm hooded wetsuit.