Sole sizes are US. Label shows UK. M = Men's W = Women's Walking Shoes: The Crocband flip-flops for women are the ideal warm-weather walking shoes that pair well with shorts, jeans or swimwear Outer Material: Synthetic Inner Material: Unlined Sole: Ethylene Vinyl Acetate Closure: Slip On Heel Height: 0.5 centimetres Heel Type: No Heel Shoe Width: 5 M US adult_us Lightweight And Fun: Incredibly light and easy to wear, these Crocs women's flip-flops are created with Croslite foam, featuring Iconic Crocs Comfort that offers all-day comfort and support What Size Should I Buy?: These shoes offer a relaxed fit, so Crocs recommend ordering a size up to the next largest whole size Comfortable Water Shoes: Looking for comfort shoes? The upper soles of these flips offer massage-pod footbeds that feel good on your feet. These women's flip-flops also offer a comfotable fit for flippin' around town or in the water