My Lezyne multi-tool, battery pump tire levels and extra plugs all fit nicely in this saddle bag. The side straps hold it super secure under the seat, however the seat post loop is too big so doesn't grab much of the Velcro. Thankfully less important and I have twisted the non-Velcro side to make it shorter. The bag uses a very protective material. The zipper has a nice pull loop but worry about the zipper threads getting dirty and stop freely sliding. A little larger zipper may alleviate this potential.
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
