This 500Ml Thermosteel Flask Is Built To Keep Beverages Hot Or Cold For Up To 12 Hours, Ensuring Freshness Throughout The Day. Made From 100% Rust-Free Stainless Steel With Premium 18/8 Fabrication Inside And Out, It Offers Durability And Long-Lasting Use. Its Sturdy Body With A Unique Flip Lid Makes It Convenient For Travel, Office, Or Home, Combining Practicality With Modern Style.