Made of FDA-approved, non-toxic, food grade silicone. Free of BPA and phthalates. Perfect compact size that easily slips on and off of writing instruments. Natural way to calm and improve focus. Our sensory pencil toppers are the perfect chew tools for individuals with sensory sensitivities, autism, ADHD, SPD and other special needs. Soft and gentle on teeth. Helps to prevent the harmful chewing of pen caps, jewelry, clothing, fingernails and more. Encourages oral stimulation, promotes attention and reduces fidgeting. Easy to clean with soap and water and dishwasher safe.