40 oz Mug is made of 18/8 stainless steel that is copper-lined & double-wall insulated with powder-coated matte finish. Keeps beverages hot up to 12 hours and cold up to 30 hours. Comes with 3-position matching swivel top lid with silicone straw hole, matching plastic straw, Hand wash only. Do not put in microwave or freezer. 10.5" H x 4" Diameter
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