This 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, & matching plastic handle is 4-1/4” tall and sticks out 1-1/4” at widest part. Hand wash only. Do not put in microwave or freezer.