ROCKBROS Bike Frame Bag 840D Nylon Waterproof Bike Triangle Bag Bicycle

I bought this specifically hoping it would make a good bag for an ebike controller. I bought a front hub motor wheel kit to convert my bike to electric. It is the "old school" kit with a big controller with lots of wires for plugging in the various components. If you know what I am talking about you realize those are hard to contain cleanly just because the wires are numerous. This bag worked out perfectly - the controller and all the wires fit in nicely and best of all should you need to replace a component you just unzip the bag, find the wire you need and swap out the component (throttle, PAS etc.). The one thing I was not crazy about was the mounting straps they provided but a 1" Velcro One Wrap strap allows you to perfectly customize your length and gives you a very clean install. When I first tried out my ride I noticed the controller was bouncing a bit in the bag and rattling against the stiff bottom. I put some chunks of foam packing material under the controller and added a couple of cinch straps around the bag for extra security and now the setup works perfectly, holds everything inside cleanly and gave me a really clean looking install overall. The bag is nice quality and should last as long as I have the bike. I can't vouch for the waterproof aspect but I never feel great about having an ebike out in the rain anyway so unless I get caught in a surprise rainstorm I'll never worry about that. 100% perfect for my intended use here. 5 stars all the way except for the mounting straps but the Velcro One Wrap works far better anyway.

Posting these early in case they can help someone else. Both bags from Rockbros. Both come with 5 hook and loop fasteners, (1 front, 1 rear, 3 on top) with some flexibility on exact placement. Both have a zip opening on each side - right hand side to the main compartment; left hand side to a slim pocket. Right hand side is full height, left hand side (because of how it’s bonded) is about 1/2” shorter than the bag. Both well made, look to be shower proof and both have there attachment points bonded to the main bag (not stitched). This bag (the larger one) is sufficient for tube, tools, small pump, first aid kit, snacks and a change of top. Slim side may be good for band aids, very slim lights, wipes, bandana and is large enough for a pro sized smart phone. Being larger is does sit on my front water bottle and I’m either going to have to move that to the underside or purchase a shorter bottle.

Has worked great for a bit under 2 years, but the zipper has now failed and doesn't actually close the opening when you pull the zipper to the closed position. To be fair, I've had this thing crammed full before with a lock, lights, battery pack, jacket, sleeves, etc. so I'm sure I've stressed it to its limits. For the price I can't complain too much. But I was not happy that it decided to fail while racing Unbound Gravel this year.

Absolutely amazing!! So much extra storage.

I have not evaluated the water resistance, only the fit and apparent quality. We will see if it holds up. This bag is almost a perfect fit for a Bosch powerpack 400 or 500 frame mounted ebike battery. Wish the zippered opening was just a tad bigger, but it works with some wiggle. The bag itself is nicely made with many mounting loops, so it is extremely secure on the frame. Using it for gear works too, it's very roomy without being too huge for the bike frame. My new favorite bicycle bag company. Many reviews mention poor water resistance despite the bag claiming to be waterproof. I don't really need it to be waterproof but I would prefer it and pay for it. Now, at this price level they could simply remove the claim and it still would be a great bag. Alternatively, make it truly waterproof and increase the cost as necessary.

I ride my gravel bike almost daily so the bag gets lots of use. There are many features I like about this bag, and I am on my second one. The problem I am having is the zipper has in both bags essentially worn out. This time the bag zipper wore out after 16 months. But in all fairness, that is about 7,000 biking miles and perhaps a reasonable lifecycle for this bag. However, I decided to order the more expensive Osprey Escapist realizing over time, this bag should last much longer and work out to cost me less in the long run.

Love the bag! feels durable and it was super easy to install. I love the fact that you can switch out where the straps can go on the bag so you can add it to the front of rear of the bike frame. Zippers feel nice and tough too. The left pocket is thin which is great for energy packs/bars or keys. The right pocket is where you will put most of your stuff. Enough room to fit a spare tube, bike lock, jacket, food etc. Also, I have yet to test out the water resistance. If I had to have 1 small con, it would be that sometimes it takes both hands to zip the bag closed when its attached to the front of the frame but that can be fixed by adding something inside the bag so it doesn't scrunch up when you try to zip it closed.

I realy like the feel an room space this bag provides. It fits my 58 cm specialized and leaves enough space for 2 water bottles. I use it to carry my waller, phone, keys, food and other stuff. It doesn't feel like it will Iast for many years but for the price I thik is a good deal. I haven't tried out in the rain but it looks like only the left side (small compartment) of the bag is water proof. Another point is that all the straps that hold the bag to the frame are are of the same size. This is an issue for my bike in specific because the lower tube is very thick. I will probably have to replace the front strap for a longer one in the future.

Es muy buena opción, lo único es revisar bien las medidas para no tener problema al instalarlo en el cuadro de la bicicleta.

GTへの取り付け特に問題ありません。 他の方のレビューにある通り、ジッパー部分はやや硬いですが、その分止水性は高いと見ています。 あと２枚目の写真のパーツが用途不明です。 とりあえず保管してますがこれは何に使うんでしょうか。

So, on a recent multi day trip I needed a frame bag... and quick. After a lot's of reading, I settled on this Rockbros frame bag. The super cheap price, rigid nature of the bag and more importantly water proof feature really sold me - did I mention how cheap. Bag turned up in a few days too. The smaller left hand side was great for thin items (battery, nutrition etc) and the larger right hand side perfect for tools, tube, arm warmers & rain jacket. Soooo easy to access too. I also really liked the flexible nature of the multiple mounting straps. If this bag was 4 times the price, I'd still be happy. In a word - AWESOME!

Great product. Fits a swell bottle, snacks, change of shirt, tire patch kit and other accoutrement. Sturdy and stays out of the way of your legs. Best for long trips as you'll have to take it off and on when you go into stores, etc.

Solo la he usado una ocasión, y funcionó bien, tiene buenos acabados.