I just got two of these and like the size/capacity. I went hiking on Christmas Day, when I got to the top of an overlook, I made a cup of Via coffee with a jet boil to heat the water, and this cup to drink from. The outside air temperature was 43 degrees, and the wind was really whipping it up past me. I could place my hands round the cup without discomfort and the water had just been boiling. So the cup has good insulating qualities. I like the lid too, nice to sip from the adjustable opening or could seal it up to retain heat. The cup and lid together weigh 163 grams/5.75 oz, the cup alone weighs 126 gr/4.40 oz, and the lid itself weighs 37 gr/1.30 oz. I'd recommend it.