From product description: These pull-on snow boots are built with a flexible neoprene shaft and durable rubber shell and outsole for a balance of comfort, warmth and protection from snow. DESIGN: 5mm neoprene upper provides flexibility and warmth Convenient shaft handles help kids' put on boots easily IN-SHOE COMFORT: Full neoprene lining DURABILITY & TRACTION: Rubber shell covers toe for added durability Ribbed rubber outsole for traction Brand : DSG