Double Wall Stainless Steel With Vaccum Insulation Keeps Content Cold For Hours, Water Bottle Body Made Of High Grade Stainless Steel Without Any Glass 12 months manufacturer’s warranty Inner And Outer Body Made Of High Grade Stainless Steel , Fabricated In 18/8 Food Grade Wide mouth easy to put ice cubes Wash The Carafe Inside As Well As Outside By Using a Mild Detergent.