Northside Snoqualmie Winter Boot (Toddler) 100% Manmade Synthetic sole Shaft measures approximately 6" from arch Heel measures approximately 1" Tough waterproof shell bottom with winter traction outsole Fixed berber lining is warm and fuzzy over 200 grams of thermolite insulation provides a rating of -25 degrees Once the foot is in and the velcro locked in place this boot stay in place for a fun day in the snow Reflective heel pull provides added safety