Looking for recommendations for a good bag for a jersey pocket that would fit a spare tube, CO2 inflater, spare CO2, multi-tool, and a couple tire levers.

Maybe even my phone? Note 5

I have all of that in a seat bag currently, but this year I'll be doing a lot of group rides after work which will require me leaving my bike on the (locked) roof rack during the work day. I don't want to leave anything on the bike that is easily removed and I think it would just be easier to have something to toss in my jersey pocket than to remove/replace the seat bag.

Also, rule #31 ...

I use the arundel saddle bag, because it's small and aero. For what you need, it would also be great in a jersey pocket, as it's only as wide as a folded up tube. Maybe 1.5"-2" total.

Arundel Dual Seatbag - Seat Bags | Competitive Cyclist

Perhaps just a saddle bag with a QR? I'm using the Lezyne M-Caddy QR because it's small enough, holds all my stuff (has dedicated sleeve/pockets to fit CO2, levers, multi-tool, and money,) doesn't look awful (relatively) and removes easily.

I have no suggestions for a pocket bag but I have to say my small Topeak bag can be installed and removed in 30 seconds or less. It's the kind with straps.

Check out the ride pouch by Waterfield

https://www.sfbags.com/collections/c...ing-ride-pouch

They make excellent products.

Topeak has QR bags.

https://jet.com/product/detail/44b5f...RUABoCE1zw_wcB

Didn't purchase from them, not even the same model, but you get the idea.

The large can fit my whole wallet, phone, lights, repair kit (including tube)... probably even a stray kitten it's so big. A Med should do the job for you. Just make sure you have about 1.5cm clearance on the backside of your rails for the QR adaptor.

I don't know anything about jersey bags, but like others above, have a Topeak QR bag and like it.

Topeak SideKick Wedge Pack Medium

How about a ziplock bag?

Okay, so I never got around to reading any posts in this thread until now, but I was wandering around Target with my wife and in the luggage area I found a two pack of one larger and one smaller rectangular zippered bags. It was $9.99 so I grabbed it. Both fit in a jersey pocket, but I used the smaller of the two and it fit everything from my seat bag easily. I took it out on a gravel ride on Sunday and I had a mechanical so I got to take it out and actually use it. I gotta say I found it handier than pulling items from a seat bag.