This doesn't meet my criteria for a "medium capacity" bag. I can fit a 32 mm tube, CO2 cartridge and a tire lever in the main compartment. It does have a nifty external compartment specifically for a multitool. The strap for mounting a taillight is thin and I suspect most lights would pop off after a few bumps. It looks good and appears well-made.
Holds enough to keep you riding -- co2, inflator, multitool, tubeless plugs, spare cleat screws, extra quick-link. Accessing the contents may require loosening the velcro that holds it to the seat -- easily done, but I have found that the zipper itself is obstructed by the seat if I don't release the velcro. After two seasons on one of them I have a little tear next to the zipper (maybe I cram it just a little too full with extra co2?) but not bad enough that I'll be looking to replace it this year, and I like the bag enough that I have it on multiple bikes.
Nice and compact with efficient sty
