I used these briefly once and am selling them because my child outgrew them. 【KEEN】 This is a highly functional model with a fashionable design, featuring a waterproof and breathable membrane, waterproof leather, and a non-slip sole. These versatile boots can be used for everyday wear, as rain boots, or as snow shoes. They have adjustable hook-and-loop straps for easy on and off. The opening is stylish and features warm faux shearling. They are treated with a natural antibacterial and odor-resistant process. UPPER: The upper is made of waterproof nubuck leather specially treated with silicone solution, which improves durability and water resistance without compromising flexibility. FOOTBED: EVA footbed with excellent cushioning MIDSOLE: Compression-molded EVA midsole that is lightweight, resistant to degradation, and absorbs shock during walking. OUTSOLE: The dual-climate rubber outsole changes its hardness depending on the temperature, making it less slippery on asphalt and providing better grip on snow.