The Hydra ESC is for wild runners and swimmers who go further than most to follow nature's call. With hydrodynamic, quick lock lacing and a Bloom foam insole to help you glide through water, rapid-dry materials that stay light when wet, and the Michelin ESC sole to grip the slickest, most technical trails. Our pinnacle swimrun and trail trainer, built to thrive in the aquatic biome in harmony with nature. It's a pioneering take on amphibious barefootwear, created alongside elite athletes to glide underwater, grip on land, and drain and dry quickly.