The New Wave Enviro 12-oz. stainless steel bottle is a great size for younger kids' lunches, it's easy to clean, and it comes in a sport cap that's easy for kids to manage on their own at school. It is made of Type 304 food-grade stainless steel that contains no bisphenyl A (BPA) or other chemicals of concern, and that can be used for any type of liquid (though not insulated, so not for warm drinks). We think this is a great, safe product.. Designer Brand: New Wave Enviro.