The Palma ST 3mm are manufactured from a super elastic and ultra-durable 3mm thick Neoprene and Nylon to ensure warmth and comfort. These short 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.