Warmth, flex, and protection are what make the Marathon Sessions 3mm Split Toe Wetsuit Boots the ones to pull on when temps take a nosedive. Our Hydrolock® ankle seal system coupled with hook and loop fastener strip adjustment offers advanced water blockage while still allowing for movement and maximum comfort. 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 • Back ankle pull loop • AQUA GLUE eco-friendly lamination