The Hydro Flask 40 Oz Wide Mouth With Flex Cap And Boot Is A Robust Hydration Solution, Combining A Generous 40-Ounce Capacity With The Convenience Of A Wide Mouth Opening. Crafted From High-Quality 18/8 Pro-Grade Stainless Steel, It Ensures Long-Lasting Performance And Resistance To Rust And Flavor Transfer. The Wide Mouth Design Allows For Easy Filling, Pouring, And Cleaning, While The Flex Cap Provides A Secure And Leak-Proof Seal. This Feature Makes It Ideal For Carrying Both Hot And Cold Beverages, Maintaining Their Temperature For Extended Periods. Additionally, The Included Boot (A Protective Bottom Cover) Offers Extra Durability And Grip, Making The Bottle Well-Suited For Various T