Simple Modern 16 fl oz Insulated Stainless Steel Voyager Tumbler with Insulated Flip Lid|Sea Glass Sage Checkmate

This insulated tumbler fits perfectly in the car. It keeps my coffee at a steady hot temperature for the first 2 hours before it starts cooling down. I just keep the lid closed. I like the top because I can pour my drink out a little then sip it. Definitely a good buy.

I love these cups and wish Walmart carried more colors so that our family could all have them and differentiate whose is whose. The lid does absorb odors, so switching from coffee to tea to broths or soups doesn't work so well, but for a regular coffee habit, these keep the coffee hot for a very long time. Make sure the beverage is cool enough to drink before putting on the lid or you may find it to still be too hot to drink later. If you use a washable straw, the hole is a good size; some cups have too small of an opening.