Jolly Thermo Print is a functional winter boot designed for maximum warmth and comfort. The shell is made from 3-layers of waterproof, durable natural rubber. Inside, you can find 5mm thick insulating neoprene for added warmth and waterproof protection. Integrated toecaps and rugged rubber outsoles increase durability and deliver an excellent grip. Reflective details help keep kids visible after dark. All Viking rubber boots are handmade from natural rubber. These boots are PVC-free and vegan.