This bag was bought to replace a frame bag.
The bag is easy to install.
Right now it holds two tubes, a mini morph pump and some other tools. It still has adequate space to hold a great deal more for a day trip.
My Lezyne light clips on to the back and is highly visible.
The bag is waterproof, made extremely well and acts as a half fender for the rain.
It is a purchase you will not regret.