Features: Lightweights, but providing significant resistance for water sports, specifically for water resistance training. Make of Foams, soft and skin friend. Lightweights floatings force, waterproofs and quick drying, easily to clean. Easily to carry. Specially developed for water resistance training, suitable for swimming pool, fitness activity. Suitable for underwaters fitness exercises. Can used in swimming pool, beach, and other water area. Water dumbbells can effectively exercise your back, shoulders, arm, and chest, helpings you become strongers and in better condition. Specifications: Material: Foams Size: As show in the picture Package Includes: 1pair Foams Dumbbells note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.