Cotopaxi Agua Insulated Double Wall Vacuum Sealed BPA-Free Water Bottle - Leak-Proof and Powder Coated HOT or COLD - Double-walled construction keeps contents hot for 12 hrs. and cold for 24 hrs. Will not sweat no matter what temperature the liquid is, making it the perfect water bottle for hot summer hikes and and excellent coffee mug for traveling and commuting. LEAK-PROOF - Its high quality ring ensures no leaks no matter how you shake it. BPA FREE - BPA-free and resistant to bacteria and odors providing you with fresh drinking water. DIMENSIONS - Bottle Height: 500ml- 8 1/4 inches 750ml- 10 inches 1000ml- 12 1/4 inches WARRANTY/Guaranteed for Good - Cotopaxi products are guaranteed to last 61 yearsthe average lifespan of a person living in the developing world. If theres a problem with your product, well gladly exchange it, get you a replacement, or repair the item in-house.