Penta-Layer Insulation: 17Oz Metal Water Bottles Feature 5-Layered, Vacuum-Insulated Construction, Designed To Keep Beverages Cold For 24 Hours And Hot For 12 Hours | | Premium 18/10 Stainless Steel: Crafted From 18/10 Food Grade Stainless Steel, A Top-Tier Corrosion-Proof Quality, This Small Flask Is Suitable For Securely Storing Any Type Of Beverage, Such As Sparkling Water, Coffee And Tea | | Corrosion-Proof Highly Stable: This 18/10 Stainless Steel Will Never Leave A Metal Taste Or Rust. Everything Is Made With Food-Grade Constituents So Your Drink Stays Secure To Consume. It'S Even More Reliable And Rust-Proof Compared To 18/8 Stainless Steel | | Great Fit: Our Beverage Containers Feature A 1.6-Inch Wide Mouth That Allows For Convenient Ice Cube Insertion, Allowing For Effortless Refilling And Reuse. Whether You'Re On The Go, Cycling, Or At The Gym, You'Ll Find That Travel Mug Conveniently Fit Into The Majority Of Standard-Sized Cup Holders | | Leak-P.