The way I load the bowl, which is tighter than any other vape I have used, it will hold .25 grams. Most vaporizers I use I just drop some in and try to keep as much space between bits to allow the air to flow unobstructed.
I did not measure, but the bowl is almost identical in size to an Iolite bowl, but again, I do not pack at all to load my Iolite.
The T1 bowl is probably about half the size of the Puffit bowl, but as OF already quantified, the vapor hits from my T1 are fairly thick, and it can make me cough by the third hit every time, whereas the Puffit does not kick out an extremely thick vapor.
I played 36 holes of frolf with a couple of my friends yesterday, and brought my Puffit along instead of my Iolite. I did not count the total number of hits, But I had at least 10, one guy had more, the other less, but we were so stoned we had to put it away without finishing it!
One of my friends is a vapor man, the other is too tight to purchase one, but they both thought it was cool to use and very stealthy, and the taste is excellent, I would feel good recommending this baby to anyone, it is really fun to use.
I should also state that I am extremely lucky to be able to use medical quality flowers, which obviously will produce more vapors for a longer time. Living in a state that has issues with an individuals rights to medicate himself as he sees fit, having quality flowers is a rare and joyous occasion.
I am working on time to do another video, but I own a small auto and truck repair shop, and the AC business has kept me very busy for the last few weeks, my apologies for not having one sooner, I will get another posted this week, promise!
One more note, I have been reading a lot of good about the Arizer Solo, and went ahead and took the plunge on one, thank you hot weather gods for the extra AC money to spend on new toys!