Single Wall Stainless Steel fridge water bottle, Inner and Outer side of Bottle is made from high grade Stainless Steel 304 which is Rust Free, Odor free and 100% Food Grade. Basically it is used to keep in the Freezer/Refrigerator also you can use it in Office, Home, Kitchen, School, Gym, Trekking, and in All kinds of Sports Activities. This bottle is easy to clean and maintain -Use Mild Soap for cleaning the Bottle and advised to be kept open when not in use to avoid odor. Compact design Perfect Size easily fits in fridge and car cup holders, Easy to carry, lightweight and highly portable in any bag.