ROCKBROS ROCK BROS Bike Frame Bag Waterproof Bike Triangle Bag Bicycle Under Top Tube Bag Corner Pouch Storage Bag for Cycling Accessories

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

In my opinion, they have designed the perfect bicycle bag! It is slim, elegant, easy to put on and put off the bike, waterproof and it has two separate compartments. One for your bigger stuff (on the right) and a smaller compartment for your wallet and/or phone (on the left). The bag is so small that your bike doesn’t look bulky, but still big enough to put a lot of stuff inside! Great work!

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!

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.

This bag is sturdy on bike. Good size for all my essentials wallet, keys, phone, sanitizer, snack bag. It also holds a 500 ml bottle of water. (Minus my tool kit which is in a separate saddle bag). Be sure to measure your bike and compare before buying! I have a roadbike, the fit is good but cannot have 2 racks for water hence the bottle in the bag. Still suits my needs.