KOM Cycling Saddle Bag - Bike Saddle Bag to Carry Multi-Tool, Tube, Tire Levers, Securely Under Bike Seat Featuring for Garmin Varia Mount, ATOP Lacing Dial, and Inner Pocket for Apple AirTag.

The regular size one is a nice big saddlebag, with plenty of room for a tube, toolkit, pair of CO2 canisters, gloves, patch kit, tire levers, etc. Very easy to put on and take off, and the clasp that holds it there is positive and secure. You can cinch it up against the saddle tightly so it doesn't jiggle. And on the back you can attach your Varia and NEVER WORRY THAT IT WILL FALL OFF. What a revelation!The only problem is that the zipper does wear over time and after a two seasons it got stuck so often that I had to buy a new one.

Secure fit to bike. Nice boa like closure. Cavernous storage. Varia fits nicely on rear mount. Everything I was looking for. Agree with others, a front Velcro strap to attach to seat post would have been nice for added security/stability. Yet to test on the road. Seems high quality and good value. (Instruction on tab removal would have been nice - eventually figured it out. Side opposite of “boa” unsnaps so you can fish through your seat rails).Edit : post road testing over 50 miles on varied road and bike path terrain - this thing ain’t going anywhere! Secure in the cockpit and I changed my mind about another strap to go around the seat post, as it really would be unnecessary. I’ve got mine 1/2 full of stuff and it sits nicely behind by D-wedge seatpost. The varia radar works perfectly without mishap and the bag is plenty secure. 👍

This is 5 star product idea with 4 star execution. The built in Varia mount is amazing (though make sure to tighten the screws on it and maybe add some Loctite just to be safe as mine were a little loose from the factory), and saves both seatpost real estate as well as the need for multiple mounts on multiple bikes.Size is pretty good. I currently have the following inside comfortably: Lezyne pocket pump, 650bx47mm tube, multitool, tire levers, Dynaplug, nitrile gloves, electronic pressure gauge, and a small hand towel. Just picked a hand towel the right size to fill out the space and absorb any rattles. Internal dividers/pockets would be nice for that but the single compartment gives more flexibility, so no real complaints there.The BOA-like dial system seems to work well. Turn clockwise to tighten, counterclockwise to release. Need more time to tell how robust it is, but feels good so far. Doesn't hold the bag super sight to my saddle, but it seems on par with the average saddle bag mechanism.I'm knocking off one star for not having some sort of strap around the seatpost. As is, only the BOA strap holds this in place, and that leaves it a little loosey-goosey for my tastes when I'm climbing out of the saddle. I attached a handlebar strap from an old light to the end of the bag, and now it's super secure. And now if for some reason the main strap does give out, I have backup. If you can sew/epoxy on some Velcro onto the end, or have something else you can use to secure to the seatpost, I'd recommend it.

After 19 days and just under 200 miles my new bag has torn. The material is paper thin along the top and where it contacts the seat post. I'm very disappointed in an otherwise nice bag.

The bag is really good size for fitting the essentials (spare tube, tire levers, multi-tool, CO2 cartridges and works perfectly with the Garmin RTL-515 putting it at the optimal angle. The installation is easier and more flexible than most bags and the dial makes it more secure.The only question is that the description says that there is a pocket for an AirTag and some money but I have not found this pocket which would be very useful.

I actually bought both the small and large bags, neither met my needs. The small is too small capacity to take a second tube, the large is quite large and sticks out under saddle. Additionally, when loaded, the bag droops in the rear and points the radar downward. An in-between size would have greatly helped. Materials used are lightweight and appear durable, but the lack of a seatpost strap to prevent sway is a concern. Finally, the product description claims an interior pocket for an AirTag or keys that I didn’t see.

I primarily chose this saddle bag because of the connector for the Garmin Varia. I have several things that are mounted to my seat post, and this freed up a considerable amount of space. It also allowed my Varia to be posted higher on my seat post which seems to provide better coverage. I was also pleased to see that there is enough space in the bag for my roadside emergency kit. It fit a 700c inner tube, several CO2 cartridges, tire levers, a CO2 inflator, and small multi-tool. I also liked the unique way you can dial-up the tension of the straps that hold the bag in place. It is a very snug fit against my saddle.

I love the idea of this bag.But the BOA style attachment uses strings and not wire so it is fragile.I started using a Voile strap to hold it on tighter. As others have said it really needs a second strap somewhere else.Also the Varia angles down and not straight back. The Voile strap helped angle the Varia straight back.But now after 11 months the zipper is ripping. I’m giving up on it.I like the idea of it, so put the Garmin on a better quality seat bag.