Sockwa Playa Hi Beach Socks Lycra/Neoprene Pull-on beach socks with secure ankle closure ready for beach sports, walking, beach wear, river crossings, and more 2mm neoprene sides and toe area for warmth and protection, with lycra tongue for breathability and flexibility. Outer sole of braided fabric for abrasion resistance on sand, inner sole lined with thin fleece for comfort. Perfectly sized velcro flap at the top that makes getting in and out easy, while keeping out sand and debris. Designed for use on sand or smooth surfaces - not on concrete. Crushable, flexible, durable, minimal - and machine washable!