Iron Flask is Here to Insure You Have the Hydration Needed to Get You Through the Day and Crush it! Features 18/8 Stainless Steel and is vacuum insulated to keep your tumbler condensation free. Powder coated exterior finish offers durability & an easy grip. Each tumbler is packaged in a color matching gift box. 100% leak proof clear flip lid & 2 black straws. Rubber bottom base. Hand wash only. Keeps cold for up 18 hrs & hot up to 4 hours. 24 oz. | 7.6" H x 2.6" Base Dia. x 3.1" Opening Dia.