Custom 20oz Stainless Steel Tumbler Dishwasher safe and fit GREAT in car cup holders, too! *All of my tumblers come with a push-on, slide open lid, a rubber slip-proof bottom and a stainless steel straw with cleaning brush!* Double-Wall Vacuum insulated thermal design is good for keeping your drinks warm or cold for a longer time, so you can use it in any season! I make these myself and plan to post many more designs soon!