Kuber Industries Pack of 4 Stainless Steel Water Bottle | 1 Litre Steel Water Bottles | 16 Pieces Water Bottle For Fridge | Cold Water Bottle | Water Bottle for School-Collage-Office-Travel | Silver FOOD GRADE STAINLESS STEEL: Kuber Industries ' water bottles are made of food grade, 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.