I saw these a while ago and finally bought some. They're 2.5 oz full, with 2-1/4 oz net weight of peanut butter. But now I can carry only what I need and can throw away the container instead of carrying the whole PB jar around. Geekery that I even weighed the thing, I know...even worse that I took pics and put them on the internet!!
http://www.tothewoods.net/GearReviewJif.html