The Cressi Rocks Kids Fins are Cressi's answer to the price-conscious parents who need reliable snorkeling fins for their kids for vacation use. The Rocks are composite-design, vented open heel fins with adjustable straps designed to follow the kid’s growth. The straps have the large-thumb-loop for easy donning and doffing. Dual composite vented blades provide excellent power and energy-saving efficiency. All in all, these fins are great for family snorkel trips and will allow hours of underwater exploration.