new, high quality Foam ball measurement: this set of foam balls are in 4 diameters, satisfy your different needs Made of solid foam of high density, not easy to break and scatter, very lightweight, allow you to use for a long time Convenient to use: you can use this set of decorating balls with glue to stick them on some items, or use a needle to pierce them together to make a string, depend on your needs Great for crafting projects or various decoration in different situations, such as Christmas, Wedding, Party, arts, household and school projects Specification: Material: Foam Size: Approx. 10mm / 0.39inch ;15mm / 0.59inch ;20mm / 0.79inch Color: White Package Includes: 100 Pieces 10mm Foam Balls 100 Pieces 15mm Foam Balls 100 Pieces 20mm Foam Balls Note: Item measure by hand,it could be 1-5mm difference,your kind understanding will be much appreciated!