22oz Memphis Tumbler With Flip Top Lid & Stainless Steel Straw. Terrific lid design allows you to sip hot liquids by removing the stainless straw and closing that opening. Vacuum insulated double wall stainless steel tumbler. Powder coated finish. Stainless steel rim accent. Keeps liquids warm for up to 12 hours. Keeps liquids cold for up to 24 hours. Stainless steel straw and flip top lid combo - use with or without the straw. Dishwasher safe!