FOOD GRADE MATERIAL: The water bottle is made of BPA-free plastic & food-grade 304 stainless steel . Easy-to-clean nonstick interior. GREAT DESIGN: 500 ml capacity and creative push- button design make this water bottle ideal for everyone to use both indoors and outdoors. The bottom of the bottle is anti - scratch and anti - slip. VACUUM INSULATION TECHNOLOGY:The stainless…