1.304 stainless steel 2.FDA,BPA Free, SGS,CE 3.Non-toxic,dishwasher ... resistantSlim design fits most bottle/cup holdersNo BPA, phthalates, lead or other toxinsMade of 18/8, food-grade stainless steel (no liner needed ... :Factory View: wholesale USA popular style BPA FREE 18/8 stainless steel kids bottle ,350ml stainless steel feeding bottle