They are made from thick Neoprene with excellent heat retention, high-grip textured bottom and an adjustable ankle strap to guarantee great comfort, warmth and protection. Fit snug, dry quickly. Perfect for all water sports. Features: 3mm premium neoprene material protect your feet from any sharp objects and keep warm in water and winter sports. Non-slip bottom provides secure grip on a variety of surfaces. Strong adhesive fastener tape improves the tightness of the cuff & ensures minimal water / sand entry. Wonderful for snorkeling, swimming, scuba, surfing, sailing, kayaking, diving, rafting. Specifications: Material: Neoprene Color: Black / Rose ( optional ) Size: S / M / L / XL / XXL (optional ) Weight: 106 - 162 g / 3.7 - 5.7 oz Packing Size: 25 * 17 cm / 9.8 * 6.7 in Package List: 1 * Pair of Socks