The TYR Flotation Belt provides adjustable flotation for water exercisers, swimmers, and aqua therapy patients alike. Fitting waist sizes 27 - 52", this ergonomic jog belt by TYR can be adjusted by removing foam modules. This flotation belt is made from soft EVA foam, making it great for long workouts, swim sets, and general relaxation. When properly adjusted, the belt should be snug, but not constricting. You want to be comfortably secure, without leaving room for the belt to ride up.