[Step On backstay features a connection point on the heel for a strapless boot-to-binding connection; 1:1 Medium Flex PowerUp Tongue creates a snug fit between boot and tongue Single-Zone BOA Fit System uses an inner spool to route the laces for a snug fit and easy lace adjustment Lock-Up Cuff super low-profile inner cuff provides maximum heel hold and easy on-and-off "Kids Imprint heat-formable liner tightens the liner with integrated lacing a lace lock and a Feetbelt strap; Sleeping Bag Reflective Foil underfoot improves warmth and comfort" Step On outsole features toe cleats in the forefoot for secure fastening; 1-year warranty]