Manufactured with Phthalate Free; Lead Free, non-PVC, 100% LDPE Plastic Materials, 3" diameter (meet US Government Small Parts Regulations for kids 3 years or under) in 5 Bright Colors. Compliant to all outstanding US Toys & Child Safety Standards. Larger 3" Balls also provide you twice the volume/mass as the 2.5"(or 65mm) balls, and 60% larger volume than the 70mm(2.75") balls. These 3" balls would saved you money overall! * Heavy duty construction to withstand abuses, even in a high traffic commercial environment. Using a unique 2-stage blow molding process to ensure consistency of quality (thickness; weight; color & firmness); smooth seam & surface. Re-enforced seam & extra heavy construction to ensure each ball will withstand over 150 pounds of body weight. Tested to withstand up to 10,000 compressions to 60% of its original size (based on diameter). * Individually date-coded to ensure quality & warranty tracking. 90 Days Replacement Warranty! 100% Guaranteed against Crushing (Denting is normal, will return to original shape), Cracking & Deformation. 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. Due to large volume. all ball pit balls were shipping by volume, not by actual weight. ( refer to as Dimensional Weight ) * Pack of 500 Balls in ship-ready packaging. Each pack of 500 Balls will fill approximate 8.0 cubic feet of volume. Other quantity available offered spearately thru Amazon product listings: " http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dtoys-and-games&field-keywords=my+square+deals+commercial+ball+offers " or search on Amazon using keywords " my square deals commercial ball offers ". Please contact seller if you have any additional questions * Built for use in Commercial Establishments such as Chunk E Cheese; McDonalds, My Gym; Schools; Daycare Centers; Doctor"s office; Indoor Playground and Gyms; etc. Can be used in a home environment, however, not recommended for use with 3 years or younger kids as these heavy duty balls might be a little "too hard". For home use, we recommended the standard home grade balls, which can be ordering thru separate Amazon product listings by searching using keywords: " my square deals ball offers home " or simply use the link: " http://www.amazon.com/gp/product/B00AN2S9K8 ". If any questions, please contact seller for details