There is no doubt that our product can ensure the safe of your kids because it has good impact and shock resistance, and it also can be used to fill any place. It can exercise your child's hand-eye coordination and promote motor skills during playing. Surely, our product has smooth surface because of its exquisite workmanship. And it is safe and eco-friendly because it is made of high-quality materials. It is made of plastic, is comfortable to use. The diameter of the product is 5.5 cm. Toy balls are perfect for filling any ball pit, tent, playroom, kiddie pool, game fence and bounce house. Item Name: Ocean Baby Ball Material: Plastic Features: Finger Training, Waterproof, Portable Size Details: Diameter: 5.5cm/2.17" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. The quantity is about 100pcs, due to manual calculation, the quantity might has 1-5pcs more or less, hope you can understand, thank you. Package Includes: 100 x Ocean Baby Ball (with Storage Pack)