fits great! functions well! carries what you need!
excellent bag so far; doesn't rub my legs and looks good on the bike (as well as a seat bag can, at least). my only gripe is that i wish the velcro didn't bulk up so much at the bottom; makes it bigger than needed and spoils the sleek look somewhat.
this easily fits one road tube, lezyne sv10, two CO2 carts, lezyne trigger drive head, park patch kit, sram powerlink, tire boot and tire lever. and that's without using the external multitool pouch. people who say it's not big enough are either carrying too much with them or not packing it well!
if you're going to carry a seat bag, i highly recommend this one. you could do much worse.