Prices are as marked; discounts vary by size. Sales items are final and cannot be returned or warranted. High Performance with Thermo Lite Infrared Warmth. Comp X falls in the top tier of the performance and warmth categories. It offers a lightweight Channel Flex exterior which maximizes stretch, combined with Infrared from chest to ankle for added warmth. This suit also offers completely sealed seams, and 1 piece front and back panel design.