Fangrui Product Details [wall Glass Coffee Mugs]this Coffee Cup Is Made Of Scratch Free Borosilicate, High Temperature And Condensation Resistant, To Provide You With The Safest And Healthiest Glass Coffee Cup [double Glass Design]with Double Glass Design, Heat Insulation, The Outer Layer Will Not Heat Up, Prevent Hot Hands, You Can Keep Your Favorite Liquid At A Certain Temperature For A Longer Time Wide Use: This Clear Glass Mug Is Versatile, It Can Be Used For Coffee Cups, Tea Cups, Beverage Cups, Milk Cups, Beer Mugs, Clear Mugs, Etc. With A Large Capacity Of 275ml, You Can Add Milk Or Sugar To Your Cup Of Coffee When You Are Brewing It Without Overflowing. So Its An Size That Can Be Fully Applied In Daily Life And Bring You A Wonderful Life Experience. [comfortable To Hold]this Double-layer Cup Glass Insulation Allows You To Hold A Hot Drink In Your Hands Without Burning Them, They Are Comfortable To The Touch And Can Also Be Used As An Iced Coffee Cup, With The Cold Drink Sitting In The Glass While You Sta