Baffin Young Snogoose Youth Sizing Waterproof Boot (Little Kid) Ripstop Nylon Imported Rubber sole Shaft measures approximately 7.5" from arch Heel measures approximately 1.5" Boot opening measures approximately 17" around Removable foam-based multi-layer inner boot Built-in snow cuff with lace lock Easy-adjust lace system with lace lock Active rating to -76 degrees fahrenheit Waterproof materials and construction