USHA SHRIRAM Insulated Stainless Steel Water Bottle (500ml - Pack of 4) | Hot for 18 Hours, Cold for 24 Hours | Water Bottle for Home, Office & Kids |Rust-Free, Durable & Leak-Proof |Multi-Colour Set REAP THE BENEFITS OF STEEL: The Usha Shriram Stainless Steel Water Bottle for kids, home & office is made of 8/18 304 Food Grade Steel which is BPA-free and helps keep you and your family hydrated without worrying about any bacterial development or toxins leaking into your water. COLD & HOT WATER BOTTLE: Our insulated water bottle comes with a double wall that keeps your water cold for up to 24 hours and hot for up to 18 hours. It can also be used as a flask for coffee, tea, or other beverages! LEAK-PROOF & EASY TO USE: These water bottles have an ergonomic design, are lightweight, and are leak-proof. This makes them the perfect hydration companion at home or on the go. ECO-FRIENDLY & DURABLE: Our 8/18 304 Food Grade Insulated Stainless Steel Bottle is rust-free and super durable. Our insulated stainless steel water bottle is the ultimate sustainable choice for your family and can be reused every day without creating any waste. EASY TO CLEAN: Unlike plastic bottles which can develop a yellow tint with long-term usage, Usha Shriram stainless steel bottles are super easy to clean with hot water and a regular dish soap.