ROCKBROSBike Saddle Bag - Small, Lightweight and Portable Under Seat Bag for Road Bikes

Great product works great. I give it 5 stars but my only complaint is It doesn’t fit everything I wanted to fit in the pack. It is very compact and fits my needs for the most part. So far really good product.

Finicky to mount, and no indication of how is included. Thanks to previous reviewers that helped out here. Super tiny, but good enough for 2 TPUs, 2 CO2s, and a few tools.

Great fit with lots of space

Quality good BUT horribble attachment design. Can't even tell how to attach to saddle. No instructions either. This bag needs redesigning fast!

Pretty small so you can’t fit too much in there but it works like small stuff.

Just big enough for essentials. Tube, CO2, tools, patch kit. Small enough to not sway or hit legs. The rail attachment is nice because you can loosen the bag strap without it coming off the seat rail.

Nothing wrong with it but beware of how small it is. I can barely fit a TPU tube with 85mm valve stem and a very small electric pump. Nothing wri f with it,but check the dimensions before buying. I will be returning.

I just fitted this saddle bag to my bike, and must say, I like it. Mine unfortunately didn't come with any mounting instructions, and the velcro straps didn't seem too initiative at first. And at first I was like, "WTF? How is this thing supposed to mount up". But, with a few minutes of trial and error I figured it out. And once I did, I must say, I actually prefer the way it mounts over my other saddle bags that use BOA straps (Silca). Just to possibly save you some time... Pull the little straps OUT of the slots in the larger strap. Install the larger strap as usual, one at a time. After putting each large strap around its corresponding seat rail, THEN thread the small strap back up through its slot and fasten into place with the velcro. Then do the other side the same way. EXCEPT, the left small straps folds in toward the inside of the saddle, and the right one folds out toward the outside of the right seat rail (viewed from the rear). Next, the large strap just wraps around the bottom of the bag, through its buckle, and back upon itself to fasten with the velcro. The thing I like about his system is that the interface of the two small straps with the large strap is what actually holds the bag to the seat rails, and the large strap wrapping around the bottom just cinches the bag in tight to the saddle. This way, when you want to open the bag, just undo the large strap, and the part that's actually holding everything in position on the saddle is undisturbed and stays in place. It seemed overly complex at first, but once I had it figured out and mounted, I discovered that in fact it's very secure and very simple to operate whenever one needs to open the bag.It would be a bit much to attempt to add photos of the attachment process I just described. But, I did add a couple so you could see the size and scale of the bag.This is a small bag, so pay attention to the dimensions to insure it's large enough for your needs. I can't tell yet about the waterproofness of the fabric, but it does use a waterproof zipper, so I'm hopeful that the fabric is as well. The bag has a bright orange liner so it's easy to see the contents. And it also has two small mesh pockets to help with segregating smaller items, like maybe patches, or valve cores, etc.I can say that I have, and have used some other Rockbros cycling products, and have been pleased with them all so far. For what they are, and the prices they ask for their products, I'll have to admit that they offer an outstanding value, IMO. And this bag is no exception. I still need to see if it will hold my necessities. But I really hope that it will because I'm really kinda impressed with this bag and look forward to using it if holds everything I like to carry.Hopefully this review is helpful to someone.