Magnetic In-hand Multi-Digit Plush Numbers Construction Kit in Child-Friendly Backpack Carry Case Polyester fabric and fiberfill (machine washable in cold water, air dry); canvas backpack Imported Foundational understanding of number system: Base Ten Washable in cold water and air dry In-hand creation of multiple-digit numbers due to magnets in both sides of each number's "head" Embroidered quantity dots on the back of each number help kids link quantity to shape Playful learning tool of "Friends You Can Count On!"