I'm looking for an seat bag that can carry:
A folded sew-up tire
One Tufo glue tape
Silca mini pump
A multi tool
My Razor phone
I don't mind if it is a set up that carries the U-lock underneath the bag, as long at it can carry it.
The bag being easy to remove would be a boon, as I can take it along with me when I lock the bike.
Stable, secure, and not butt ugly would also be nice.