Quench Your Thirst For Adventure. Double-Wall, Vacuum Insulated Design. Keep Your Beverages Hot Or Cold For Up To 8 Hours With The 1.5L Double-Wall, Vacuum-Insulated Design. Stainless Steel Construction. Crafted From Premium 304 Stainless Steel, It Assures Not Just Superior Durability But Also Unmatched Food-Grade Quality. 100% Leak-Proof* Design. The Innovative, Insulated Lid Is More Than Just A Leak-Proof* Seal, It Conveniently Doubles Up As A Cup! Easy Cleaning. Designed With Practicality In Mind, This Flask Is Also Dishwasher Safe, Simplifying Your Post-Adventure Clean-Ups.