Searching of a fitness dumbbell for your kids? Our professional fitness dumbbell will be the for you. You can fill the dumbbell with water or sand in different weight to adjust the dumbbell weight. Made of plastic material, durable enough for your long-term use. Practical and portable design, ensures its popularity. Features -Color:Multi -Material:Plastic -Size(The longest size after assembly):91.00X18.00X18.00cm/35.76X7.07X7.07in -Perfect for kids playing, so that they can exercise hand-eye coordination. -This dumbbell tool can promote the development of the baby's arm muscles. -Bright color design lets your children fall with these portable dumbbell. -Use this adorable dumbbell to train the baby's arm strength. It can not only be used as an fitness tool, but also as an toy for children. -The baby can exercise the muscles of both arms and hands by plaything these dumbbells. Package list: 4 x 800ml yellow round plates 4 x 520ml green round plates 4 x 330ml rosy round plates 4 x 200ml blue round plates 4 x end caps 1 of silicone plugs 2 x nozzle 1 x straight tube