My Balls Pack of 500 Halloween Theme Ball Pit Balls - Black Color Only Manufactured with Phthalate Free; Lead Free, non-PVC, 100% virgin(non-recycled) PE Plastic Materials, 3" diameter (meet US Government Small Parts Regulations for kids 3 years and under) These balls were fully compliance with all applicable US children's Toy Safety Standards. using a unique 2-stage blow molding process to ensure consistency in quality (thickness; weight; color & firmness); smooth seam & surface. Individually date-coded to ensure quality & warranty tracking. 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. Pack of 500 balls in ship-ready packaging. Each pack of 500 balls will fill approximate 8.0 cubic feet of volume.