Double Wall Insulation: The Travel Mug Features Double-Wall Insulation To Ensure That Your Drink Stays Cold Or Hot For Twenty-Four And Six Hours, Respectively. With The Vacuum-Insulated Design, The Bottle Will Not Form Condensation On The Outside, Reducing The Potential To Damage Electronics. | | Quality Stainless Steel: Use Non-Reactive And Lightweight 18/8 Stainless Steel That Is Flavor- And Odor-Resistant, Easy To Clean, And Bpa-Free. | | Easy Carry: Designed With A Tapered Shape That Fits Most Automobile Cup Holders Without Tipping Over. This Slim Bottle Will Fit Comfortably In Your Hand And Is Compatible With Most Car Cup Holders. | | Leak-Proof: The Flip Cap Not Only Provides A High Water Flow But Also Enables You To Sip Your Drink Without Random Splatters And Spills. Plus, The Lid Ensures That Your Water Stays Locked Inside The Bottle And Lets You Enjoy Leak-Free Portability. | | Wide Mouth: The 3-3/8 Inches Wide Mouth Is Enough To Fit Full-Size Cubes. And With A Wid.