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. While very sturdy, they can be torn with effort and may pose a choking hazard if small pieces are ingested. Adult supervision is strongly recommended. This set includes 26 uppercase sponge letters in bold, vibrant colors—perfect for bath time, sensory play, and early learning activities.Details:MulticolorEach sponge measures 1" thickIncludes 26 bold uppercase lettersMade of real cellulose sponge material, Non toxicRinse and wash the sponges before the first useMade in USAAges 3 and up with adult supervision