This is the IST Low Cut Neoprene Beach Sock with Lycra Upper Beach Booties Features: Lycra upper with stretchable ankle rim Smooth, flat seam construction Comfortable and tough neoprene sole with anti-slip traction dots Neoprene heel and toe caps for extra protection and durability Wear alone, or use to prevent chafing inside of sandals or fins IST SKB Low Cut Water Socks for All Beach and Sand Activities are the perfect, versatile addition to your recreation wardrobe. Neoprene sole with traction dots protects feet from hot, cold, or rocky sand, provides a high-wear surface in the pool or spa, and helps to avoid slipping when navigating the slick surfaces around tide pools.