Come and Check Our Branding Solutions.dumbbells help your muscles build endurance as well as increase flexibility by providing additional resistance under the water. They also serve as a weight-adding tool for your aerobic routine, moderately making you burn more calories,Made of EVA foams, durability, and resistance. They provide flotation and low water absorption. Lightweight and portable.versatile tool:Great for aquatic classes, water physical therapy, pool exercise, underwater fitness, water Zumba, and water aerobics. Pls check inventory and detailed info before placing your orders.