100% Made From Food Grade & Eco-friendly Silicone; Tested To Ensure Zero Chemical Leaching,Non-Toxic,BPA, Phthalates, PVC And Lead Free. It is pretty safe for mum, baby and our environment Portable, Soft and Non-breakable; Ultra-light Design and Perfect For Traveling; Matching with a Nipple and storage gasket makes feeding and milk storage more convenient; No Battery Required