Material: Inner Liner Made Of 304 Stainless Steel, Outer Layer Made Of 201 Stainless Steel, Lid Made Of Pp. The Thermos Cup Is Designed With A Detachable Lid With A Sealing Ring To Prevent Leakage And Overflow. This Portable Coffee Cup Ensures That You Stay Hydrated While Working, Exercising, Traveling, Camping, And Meeting Your Daily Needs. 17oz Travel Cup: Our Travel Coffee Cup Has A Capacity Of 17 Ounces (500 Milliliters), Which Is Neither Too Small Nor Too Large. Easy To Carry, Suitable For Various Occasions Such As Home, Office, School, And Travel. Easy To Carry, Environmentally Friendly And Odorless Material, Bpa Free. The Cup Lid Has An Invisible Lifting Ring Design, Which Can Be Pulled Out When In Use And Retracted When Not In Use. Good Insulation Effect, Easy To Carry, Environmentally Friendly And Odorless Material, Without Bpa. The Cup Cover Has An Invisible Lifting Ring Design, Which Can Be Pulled Out When In Use And Retracted When Not In Use. The Anti Slip Design At The Bottom Of The Cup Ensures More Stable Placement. Good Sealing Performance, Even If Inverted, It Will Not Cause Liquid To Leak Out. Keep It Warm And Cold For Several Hours. One Click Open Cup Lid For Easy Drinking.