Fourth Element Rock Hopper Slippers are a light neoprene bootie for scuba diving, snorkelling or rock pooling in warm waters where you don't want a big bulky boot. 3mm stretch neoprene is comfortable & feels natural when you move around in them & the flexible natural rubber sole protects your feet from rough rocks. The neoprene is lined with Ocean Positive fabric made from recycled plastic bottles so every pair you buy helps the environment a little bit. Who are the Rock-Hoppers For? Snorkellers, Scuba Divers & any beachgoers the Rock Hoppers will protect your wet feet from slipping & sharp rocks. Great for scuba diving in warm waters the smoothskin seal around the ankle is soft & slows water transfer so your feet stay warm & no zips or uncomfortable seams mean no rubbing. 100% natural rubber outer 88% recycled lining Ergonomic footbed insoles Heel reinforcement Fin strap retainer Smoothskin ankle seal About Fourth Element The UK based Fourth Element was born from a need of high-quality & warm exposure protection for diving professionals. The founding fathers had backgrounds in design & human physiology allowing them to create a range of wetsuits, undersuits & exposure protection for all environments.