Package Include: The set contains 4 packs 20 rainbow bulk inflatable balls (a air pump is not included in this package), measuring 17.3 inches in length before inflating, 13 inches in diameter after inflating, and measuring 20.7 inches in a semi-circle. Enjoy your summer time! Premium Quality: These swimming pool inflatable balls are made of high quality child-safe non-toxic material and thermally welded, leak-proof. The balls can maintain inflation for several days, effectively preventing air leaks. It is the best choice for playing water games in summer. Easy to Use: You just need to open the valve and insert the air pump into the valve to inflate. Please close the valve as soon as possible after inflating. When storing after use, just open the valve and let the air out, these summer party balls can be folded up and stored. Pool&Beach Toys: These beach ball toys are brightly colored and kids will love them. The ball is elastic and can float on the water, good choice for various interesting summer water games. High-strength enough to kick, bounce, pass and toss. The large size brings more fun to water games. Multiple Uses: Big beach balls are perfect for a variety of water activities, such as pool parties, beach vacations,water park and educational activities. Also, they can be used as decorations to make your summer party more interesting. It can provide endless summer fun for kids and adults alike! ASIN B0CX1MRYHS Size 20 Color 20 /Pack of 4 Brand Name Vellibring Sport Type Kickball Unit Count 4.0 Count Item Weight 7.2 ounces Manufacturer Vellibring Model Number VB-US-ST375M1P1 Item Diameter 13 Inches Material Type Polyvinyl Chloride (PVC) Item Type Name Beach Balls Number of Items 4 Construction Type Thermal Welding Included Components No Warranty Description No Age Range Description Over 6 years old