Bests & Worsts Reviews from Amazon

I haven't heard what type of glass is used in the glass version (I would hope borosilicate, but I can't find this spec), so I went with the stainless steel version (1.2L). This canister seals well and has a sleek, minimalist design that I find very pleasing. However, for my average sized hands (my glove size is usually men's M or L, depending on style/brand), I find it a bit tiring to grip while twisting the lid back and forth to create a vacuum. The clockwise twist is the "working" stroke that incrementally evacuates air from the inside, while the counter-clockwise twist prepares the lid for the next working stroke. Completely empty, it takes 32 clockwise strokes before the indicator turns green (I expect that this will increase over time as the valve ages). Filled to the brim with whole bean coffee, it takes 18 strokes to achieve the requisite vacuum. (Note: I repeated the empty and full tests 3 times each). Finally, with regard to volume, with the first bag of whole beans I tried, I could not quite get an entire pound of whole beans into the 1.2L cannister and still close the lid. Even completely to the brim, the entire bag would not fit; and you need to leave about 1/4" to allow the lid to close. In all, I had to leave about 12 tablespoons out from my first try. It may be that I had an unusually generous bag of coffee (and volume vs weight has a lot of variables), so I'll update this data point after I've worked through a couple of 1 lb bags. Still, I think that as a storage solution, Fellow should have designed this with a bit more of a margin to accommodate the variability in the volume of a commodity such a 1 lb of coffee.