When others say it's too cold, you've got the power of protection to keep you going. The Marathon Sessions 5mm Split Toe Wetsuit Boot keeps your feet warm in near-freezing temps with our Hydrolock® ankle seal system coupled with hook and loop fastener strip adjustment for advanced water blockage. Featured here in the Black colorway. Features • Neoprene: StretchFlight ECO neoprene • Lining: WARMFLIGHT ECO VELVET thermal lining • Seams: Liquide Flex Seal external • GBS (glued and blind stitched) seams for maximum flexibility and minimal water entry • Entry system: HYDROLOCK Ankle seal system coupled with hook and loop adjustment • Back ankle pull loop • AQUA GLUE lamination