Made with low friction 2mm Ti-Glide Neoprene and a inner Jersey sole. The O-ring cuff makes a comfortable seal. The Ti-Glide Neoprene & the loop on the cuff make them easy to slide on. They are super warm and flatlocked for comfort. Great for canoeing, kayaking & paddle boarding. Wear them inside your shoes, drysuits, kayak dry trousers for extra warmth and comfort in the water.