They are made from thick Neoprene with excellent heat retention, high-grip textured bottom and elastic cuff to guarantee great comfort, warmth and protection. Fit snug, dry quickly. Suitable for many watersports outdoors activities,What's more,you can use it as slippers at home. Features: 3mm premium neoprene material protect your feet from any sharp objects and keep warm in water and winter sports. Non-slip bottom provides a good grip on any surface. Reinforced stitching with flat-lock seams for a long service life. Elastic cuff with anti-slip material improves the tightness of the cuff & ensures minimal water / sand entry. Can be worn together with regular booties for added warmth in very cold water. Great to travel with as they take up virtually no space when packing. Wonderful for snorkeling, swimming, scuba, surfing, sailing, kayaking, diving, rafting. Specifications: Material: Neoprene Color: Black Size: S / M / L / XL / (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 Boots