This is the Mares 5mm Flexa DS Dive Boot Booties Scuba Diving Boots Features: The exclusive DS drainage system prevents the boot from sucking to the fin Easy to put on and off Also suitable for longer distance walks to the dive sites 5 mm Mares Flexa DS Dive Boots are made from durable neoprene with a hard rubber sole to ensure grip. The strong zipper allows easy donning and doffing and prevents water entry.