Made of lightweight . Lightweight, will great resistance for your exercise in the water. Recommended for ages 18 and up. FREELY ASSEMBLY & DISASSEMBLY - Easy to carry, and comfortable to feel. Durable handle, thick plastic, to PC inner tube, not easy to slide hands. Work your upper body as as your lower back for a fitness workout. Help for rehabilitation of the elderly, post-natal weight-loss, water excrcise, water enjoyable. Suitable for swimming pool, spa, fitness exercises,etc. size:27*15*15cm Material: 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.