Great Gift Idea - An Ideal Gift For Birthday, Teacher'S Day, Father'S Day, Mother'S Day, Christmas, And More. | | Unique Original Design | | Premium Quality - Made Of 18/8 (304) Food-Grade Stainless Steel, So It Is Eco-Friendly And Rust-Resistant. | | Double Wall Vacuum Insulated - Keeps Drinks Cold For Up To 9 Hours, Hot For Up To 3 Hours And Insulates Hands From The Cold Or The Hot. | | Spill-Proof - The Clear Lid Seals Tightly With A Rubber Seal Gasket While Allowing You To See Inside. The Straw Friendly Opening Can Be Covered With A Sliding Closure To Prevent Spill. | |