Kuber Industries Stainless Steel Water Bottle, Set of 4, 1000 ml Each FOOD GRADE STAINLESS STEEL: Kuber water bottles are made of food grade, high quality stainless steel. They have been designed with a single wall steel body and plain surface. AIRTIGHT & BPA-FREE LID: The steel water bottle lids are BPA free and airtight, making it safe for you to pour and drink water from. MULTIPURPOSE USE: These refrigerator bottles are leak proof and lightweight, making them the perfect water bottles for home, school, gym and offices alike. RUST PROOF & DURABLE: The premium quality steel makes this water bottle for kids rust proof, extra strong and long lasting. ODOUR FREE & NON-TOXIC: Unlike plastic water bottles which can develop a yellow tint, these steel bottles are easy to clean, odour free and non toxic, ensuring safe drinking for you and your family.