Portable: These aquatic exercise dumbbells are lightweight and easy to carry, making them perfect for any type of water aerobics or strength training. Lightweight: Crafted with heat-resistant EVA foam, the lightweight design of these aquatic exercise dumbbells makes them comfortable to hold and use for long periods of time. Heat Resistance EVA Foam: With a heat-resistant EVA foam construction, these aquatic exercise dumbbells are able to withstand the heat of the water when used for activities such as water aerobics. Water Dumbbells for Strength Training: Ideal for both beginners and experienced athletes, these aquatic exercise dumbbells are designed to provide an effective strength training workout. Package contains: 2 dumbbells (size of single dumbbell: 27.5 X 9cm, Weight of single dumbbell: 68g (0.15lbs)). Do not use as a flotation device. Suitable for over 14 years old.