Adjustable Dumbbell: Fun, adjustable and colorful dumbbell set, suitable for children! Perfect Gift: The perfect way to slowly exercise your child. Both children and adults can use it. Add this to your child's family gym! Fill with sand / : Can be filled with sand or to increase the weight. Improve Motor Skills: Dumbbells are perfect for children to increase their strength and improve their motor skills. Color: Gray + green + pink + blue + red Material: plastic Size: Stick: 36cm Stick diameter: 3cm Disc: 400ml, 250ml, 150ml Package Contents: 2 x gray stick 4 x green disc 4 x pink disc 4 x blue disc 4 x red screw buckle Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.