Protect your feet with Grip Socks! These socks are designed for boating, fishing, water sports and beach sports. They have a rougher, tougher sole than the classic Sand Socks, and are great to wear anywhere you need your feet protected but still want a thin, flexible sole. Snorkelers and divers can also wear these under fins or flippers to protect feet from abrasions and blisters caused by salt water and sand particles. Features: Tough slip-resistant sole for traction on boats, pool decks, and other rougher surfaces. Resists abrasions from heavy sand or occasional rough objects and surfaces while protecting from hot or cold surfaces. Light enough to wear under shoes or sandals. Highest quality 4-way stretch Lycra uppers are breathable, cool, and keep sand out of the socks while providing excellent sun protection with an Ultraviolet Protection Factor of 50+. Quality Nylon/Polyester threads for reliability under the stresses of sun/sand/salt water conditions. 4-needle locking flat stitch using 6 threads for additional durability. Please note: These are socks, not shoes. Please use caution around sharp objects and use common sense - wear shoes or sandals over your socks to protect your feet (and the socks!) against glass, lava rock, coral, sea urchins, ironshore, and similar sharp or dangerous surfaces.