The Beflex from BECO is an aqua fitness tool made from Silicone that is held in the water whilst you do aqua aerobics to increase water resistance & develop balance, coordination & flexibility. Features Ideal for Aqua Fitness & Rehabilitation: these Beflex fitness tools are held under the water & create resistance so that you have to work harder to push & pull them against the water which will work on your upper body muscles, strengthening them. Specifications Negative Buoyancy Flexible 28cm L x 7cm W