One size. Fit Women's 6-10 shoe size. These luxurious Warmies® slippers are made from luxurious soft fur and are gently scented with relaxing French lavender. Simply pop them in a microwave for 90 seconds to provide up to an hour of soothing warmth and comfort. Manufactured to the very highest standards of quality and safety, with proper care these versatile and useful gifts will last for many years. Fits size 6-10 US. Quick facts: Simple to use - just warm in a microwave. Can be reheated hundreds of times. Do NOT immerse in water or wash in the washing machine - surface clean only with a damp sponge.