User Review: REI Insulated Mug
Price Paid: $4
REI has had some version of this mug for decades. I've been using mine for about 18 years now. It's completely bullet proof and keeps drinks hot longer than any other mug I've owned. It is a little heavier (by about 0.25 ounces) than many of the fancier double walled metal mugs, but it's also $30 cheaper and it'll last forever. They do melt a little if you let them touch your red hot stove, but I like the battle scars.