Made of EVA. , but will present great resistance for your exercise in the water. Recommended for ages 18 and up. FREELY ASSEMBLY & DISASSEMBLY - Easy to carry, and comfortable to feel. handle, thick plastic, close to PC inner tube, not easy to slide hands. Work your upper body as well as your lower back for a total fitness workout. Help for rehabilitation of the elderly, post-natal weight-loss, water excrcise, water fun enjoyable. Suitable for swimming pool, spa, fitness exercises,etc. size:27*15*15cm Material:EVA colour:Gray + red Package Contents: 2 * water dumbbell Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Suitable for swimming pool, spa, fitness exercises,etc. Work your upper body as well as your lower back for a total fitness workout. Help for rehabilitation of the elderly, post-natal weight-loss, water excrcise, water fun enjoyable. Made of EVA. , but will present great resistance for your exercise in the water. Recommended for ages 18 and up. FREELY ASSEMBLY & DISASSEMBLY - Easy to carry, and comfortable to feel. handle, thick plastic, close to PC inner tube, not easy to slide hands.