The Pelagic boots from Fourth Element redefine comfort in diving footwear: they are the only boots on the market today designed to include an ergonomic footbed/insole. This provides heel support and impact protection, arch support and cushioning underfoot. The fotbed also incorporates a heel cup for heel support, arch support and additional protection from sharp objects underfoot. Climbing ladders in full kit is easier and it is more comfortable to stand and walk around wearing these boots due to the rigidity and support of the insole. Additional cushioning directly below the heel provides added impact protection when walking carrying dive equipment. The boots have double layer reinforcement, on the top of the boot, protecting the foot from pressure of the fin's boot pocket and enhances comfort. The Fin-strap Retainer does exactly what is says, keeping the strap up on the back of your heel. This has been carefully researched and tested to work with most diving fins on the market today. The cut-away at the back of the heel minimises stress on the Achilles tendon during finning, ensuring greater comfort during longer dives. A common problem with dive boots is having the zip slide down during a dive, letting water in and making your feet cold. The heavy duty zip and in particular zip-stopper Pelagic boots reduce the risk of this happening, keeping the top of the boot tight around your ankle.