85% Polyurathane, 15% Polyester. Childrens hiking boots made of Isotex waterproof material. Seam sealed with internal membrane bootee liner. Hydropel water resistant technology. Enclosed hardwear for reduced trip hazard. Abrasion toe and heel bumpers. EVA comfort footbed. Stabilising shank technology - (sizes 13 UK Child/32 EU and above). Internal EVA Pocket for underfoot comfort and reduced weight. New rubber outsole with self cleaning properties, angled lugs for propulsion, braking and larger heel grip to spread impact. Ref: UTRG3622