Just wrap the velcro straps around the frame, thru the clip and tightly back. It seems sturdy enough, but i wish the positioning was more interchangeable.

The pouch is slim enough to fit in the notch just below the seat. Slim enough so that it stays out of the way of your legs while peddling. It really solves the problem of wanting to carry things with me when i bike.

The zipper effectively prevents rainwater from entering the bag. Loops around the perimeter of the bag which make it possible to customize the fit.

Good value. Nonetheless, the product and the price are great. Customer service is outstanding, too.

The bag is water resistant and durably constructed. The instructions say not to run it under the faucet for testing its waterproofness so of course that is what i wanted to do right away.