Captain Creative Super Sponges are made of real cellulose and are 1" thick. These high-quality sponges should be rinsed and washed before first use and after every use. The sponges are sturdy but can be torn with effort, which may pose a choking hazard if small pieces are ingested—adult supervision is strongly recommended. This set includes 26 lowercase sponge letters in bold, vibrant colors, making it a fun and educational tool for water play, bath time, and early learning activities.Details:MulticolorEach sponge measures 1" thickIncludes 26 bold lowercase lettersMade of real cellulose sponge material, Non toxicRinse and wash the sponges before the first useMade in USAAges 3 and up with adult supervision