The Palma LT 3mm are manufactured from a superelastic and ultra-durable 3mm thick Neoprene and Nylon for ensuring warmth and comfort. These tall socks are great for either full foot or open heel fins. The socks are lightweight and a great addition to the traveling diver's gear bag. Socks are extremely comfortable equipped with a Rubber Grip Sole design to assist with Non-Slip on wet surfaces such as boat decks and slipper ladders. The Palma are built-to-last with glued-and-sewn seams for strength and durability. The Palma LT socks are designed in Italy by Cressi and made in China. Cressi has been an Italian brand pioneer in scuba diving, snorkeling and swimming equipment since 1946. The product is covered by a 2-year limited warranty.