Free Size Compatible sizes: 23.0 - 30.0cm (stretchy) These are snowproof shoe covers to protect your shoes and trouser hems from dirt on rainy or snowy days. They are waterproof, making them convenient for going out or traveling in rain or snow. The ankle area has a rubber design to prevent slippage and keep snow out. Made of stretchy material, they can be worn over rain boots or boots. * Although they can be used for playing in deep snow or fresh snow, always use crampons (anti-slip devices, simple spikes, etc.) on icy surfaces.