CNN BEST BOTTLE AWARD FOR 2020, 2021, 2022 & 2023: Healthy Human bottles were awarded the best water bottle three years in a row by CNN Underscore. Our 21 oz rust-proof and 100% BPA-free curve stainless steel water bottles won't leave a mark or soak a bag. Healthy Human is here to inspire you to live a healthy life. PATENTED UNIQUE CURVE SHARE: The Healthy Human Curve is a one of a kind easy to grip water bottle. No other bottle on the market features such an easy grip for on-the-go hydration convenient for hiking, camping, and daily use. The curve insulated water flask features a food-grade 18/8 stainless steel lined lid that is 100% leakproof with a comfortable-to-carry handle. MAXIMUM HOT / COLD TEMPERATURE RETENTION: Using our premium TempMax copper-coated insulation, the advanced Double Wall Vacuum Insulation of the Healthy Human water bottle KEEPS LIQUIDS COLD for 24 hours, HOT for 12 hours, and PIPING HOT for 6 hours. ECO-FRIENDLY, CERTIFIED B-CORP & SAFE: Healthy Human is a Certified B Corporation and has removed over 2,500,000+ plastic water bottles from oceans worldwide and planted 20,000 trees. For each insulated water bottle sold, Healthy Human will remove 1 LB of ocean plastic, equivalent to around 50 plastic bottles. WHAT YOU GET: Premium Insulated Stainless Steel Water Bottle Flask, Steel Lined Lid, Sticker & Hydro Guide; packaged in a gift box. The wide mouth opening of this sports bottle makes it easy to add ice cubes and drink liquids.