I try to go ultralight but allow myself some heavy items just because I like 'em so much. One of those is an insulated, plastic mug from Campmor. The "Thermo Measuring Mug', #82540-B, weighs 5 1/2 ounces (6oz listed) but it works oh-so-well and costs only $5. It holds 12oz and features measuring marks. FYI, certain plasic caps from food items, specifically the cap found on containers of Progresso bread crumbs, fit the mug tightly...tight enough to allow shaking for mixing beverages.

Once I put a tea bag in the mug's hot water and walked away for ten minutes. Despite the mid-30's weather, I burned my lips on the hot tea when I came back...but not on the mug itself. That's another good use of the cap...it keeps the bugs out of the brew...

I've seen a virtually identical mug at REI.

FB