Designed for use in Commercial Establishments such as Chunk E Cheese; McDonalds, My Gym; Schools; Daycare Centers; indoor Playground and Gyms; etc. Can be used in a home environment, however, not recommended for use with younger kids. For Home use, we recommended the standard grade balls, please check Amazon ASIN# B004GLBB0M * Manufactured with Phthalate Free; Lead Free, non-PVC, 100% LDPE Plastic Materials, 3.1" diameter (meet small parts requirement) in 5 Bright Colors: Red, Yellow, Orange, Blue and Green. Meet all outstanding Child Safety Standards. * Heavy duty construction to withstand abuses due to heavy usage or weather. Using a unique 2-stage blow molding process to ensure consistency of thickness; quality; smooth seam & surface. Each Ball will withstand over 150 pounds of weight. Tested to withstand up to 10,000 compressions to 60% of its original diameter. * Industry"s First 150 Days Triple Replacement Warranty*! Guaranteed against Crush, Crack & Scratch. Each Ball was individually date-coded. Designed & Made in China & Proudly Sold in the USA. These balls were 50% more durable than equivalent domestic made balls at 40% lower overall cost. Please contact seller for details. * Sold and shipping In package of 500 balls only. Each pack of 500 Balls will fill approximate 7.5 cubic feet of volume. Other quantity available on standard grade balls (for home use only), please check Amazon listings: for 150 Balls = ASIN# B002XXC2VM , for 300 Balls = ASIN# B004HCADOK , for 500 Balls = ASIN# B004GLBB0M. Please contact seller for any additional product details.