Used about twice for playing in the snow. It seemed easy to use because it has the TGF system♪ You close it by turning the dial♪ Waterproof kids' snow boots equipped with iHEAT function. - Color: Blue - Features: With iHEAT function - Material: Waterproof material - Interior: With fur - Size: For kids Contents: Main body and TGF instruction manual Thank you for viewing. Please understand that this is a used item. Returns are not accepted after the item arrives.