Northside Zephyr Waterproof Cold Weather Boot (Toddler/Little Kid/Big Kid) 100% Manmade Synthetic sole Nylon upper with adjustable hook and loop strap and elastic toggle closure Seam sealed boot that also has topical spray for added protection Waterproof lightweight trp shell bottom Removable felt with foil liner in addition to 200 grams of thermolite insulation for -40 rating Reflcetive heel pull tab