Double boots are a type of footwear designed for cold weather and snow. They typically feature two layers of insulation, which helps keep feet warm in frigid conditions. The outer layer is often waterproof, providing protection against moisture and snow, while the inner layer offers additional warmth and comfort. These boots are commonly used for activities like skiing, snowboarding, and hiking in winter conditions. They usually have a sturdy sole for traction on slippery surfaces and may include features like adjustable straps or laces for a secure fit. Double boots are essential for anyone spending extended time outdoors in cold climates.