Nike Swim Pull Buoy keeps your legs afloat to allow you to focus on improving your form and upper body strength. Made from soft, dense EVA foam, it has an asymmetrical shape that allows you to alter the level of buoyancy and the intensity of your training. Textured areas make it easy to hold the pull float securely in place between your legs. MORE BENEFITS ASYMMETRICAL SHAPE offers different levels of buoyancy and training intensity TEXTURED AREAS enhance grip and help keep buoy in place SOFT, DENSE EVA foam increases buoyancy for more intense training