This is the Mares 3mm Classic Dive Boot Scuba Diving Zippered High Top Boots Features Zippered high top dive boot Durable rubberized traction sole Heel cap for maximum durability Fin stop on the heel cap keeps your fin strap in place Heavy duty zipper Web entry barrier The neoprene around the ankle is made of super-elastic material to create an exceptionally comfortable fit. The lower section is made of standard neoprene to ensure warmth and adherence. There is a rear notch for securing your fin strap in place. Side zipper allows easy donning and doffing of this boot.