NON-TOXIC- These building blocks are made of 100% nontoxic foam, so parents can be sure they?re safe to play with. SOFT AND STRONG- The dense foam is soft enough to delight even children with texture sensitivities while being durable enough to stand up to daily use. They can even be used in the bath! EDUCATIONAL- These building blocks come in all 26 letters of the alphabet, numbers 0-9 and multiple colors to stimulate your child?s early education. QUIET PLAY- These blocks can be used to create simple words and numbers, allowing your child to quietly develop their language and counting skills. PRODUCT DETAILS- Materials: 100% non-toxic foam. Letter and Number Dimensions: 3? L x 2? W x .25? H. Mesh Storage Bag Included.