Bike Triangle Frame Bag Waterproof 1.5L Bikepacking Bag

I’ve been using this triangle bag for a few months now, and I’m really happy with how well it works with my bike. I ride a Specialized Turbo Levo 3, and if you own one, you know how hard it is to find a frame bag that fits properly due to its narrow frame profile. To my surprise, this one fit really nicely. I just had to mount it upside down, and it worked like a charm! It sits securely without interfering with pedaling or cables. Installation was pretty simple, just use the adjustable velcro straps. The bag stays firmly in place, even on rough terrain. I’ve ridden in light rain, and the water-resistant material kept everything inside dry. There’s plenty of space inside for two water bottles and some snacks. The wide zippered opening makes it easy to access what I need quickly. The zipper on the other side feels a bit useless, I never really use it. The build quality is good, but the structure could be a bit firmer. I wish it had a bit more rigidity to help it hold its shape better. If you have a Turbo Levo or any other bike with a tricky frame layout, definitely give this a try. It’s a compact, practical, and affordable solution for carrying the essentials. Highly recommended!

I love this bag! It replace another Rock Brothers bag - a top tube bag that was nice but got in the way when standing over the top tube. This bag fits nicely under the top tube and is out of the way. I installed side entry bottle cages to make it a little easier to access my water bottles. I ordered the smaller size and still had plenty of room for two tubes, electric tire pump, multitool, and battery backup for my phone. I put tape under the mounting straps to prevent and marring of the frame. Bag attaches well and has a front opening to allow running a usb cable from my backup battery to my phone. I definitely recommend!

very well made but the problem I found is if you have a water bottle cage, and a bottle in that, this bag gets in the way. So I cannot really use it unfortunately.

A lot to like, a couple nit picks but nothing major. It’s good in the rain, well-priced, and carries everything *I* need and probably you too. It stores everything I need for trail side repair. If you run tubeless there’s even more room, but it maximally fits everything I need and is very secure in the frame. It has lots of mounting points, and the velcro straps they give are very long, a bit too long for my thin tubes, but you can tuck them away without too much fuss There are “two” compartments. The main one fits all the gear, the second, hardly anything. You could fit a couple of credit cards, some cash in there, but not a wallet. I was able to fit an AirPods case in there, but only at the widest point of that pouch. It’s extraneous, in my opinion, but it doesn’t seem to subtract much/any space from the main pouch.

The bag hits all the marks: ample storage for wallet, keys, extra tube and more on one side of bag then other side has thinner side for tire levers or thin items. Bag fits under bar fine on size “large” (size 56-ish) Kona cross bike and does not impede access to water bottles. Bag is sturdy, is held in place firmly by the included Velcro straps and bag does not hit legs while pedaling. Tested it on long rail trail and the bag does not move around when loaded with items. Have not tested it in rain yet but it appears very water resistant and even then in any bike bag I would place wallet, etc. in plastic bag or small dry-bag. Price is right and gray color is fine even though my other bags on the bike are black. Will update review after more miles are on this bag. All around appears to be a great purchase and addition for bike travel.

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 smaller one) is sufficient for tube, basic tools, small pump and basic first aid kit. Slim side may be good for band aids, very slim lights, wipes, bandana etc. - that side is not large enough for a smart phone. The large side is large enough for a smaller iPhone height wise - may want some sort of separation from tools.

I bought this so I could get my tire pump off of my water bottle cage as it is balky. I couldn't fit the pump in as the opening isn't long enough. So, I came up with taking my pump apart and by doing that It fits perfect in the bag. Can't say how water resistant it will be but seems like it will hold up in a rainstorm. There still is room to put some more items in with my pump and on the other side is another pocket that you can store small nonbully items like your ID, money, phone and some gels.

Nice top tube bag. It could have been a little bit longer (I believe it was sold in one size only.) However it's a really nice bag for all my tools and goodies. I'm very happy with it and even though it's a bit shorter than my top tube, that allows for me to have a full size water bottle on the forward bottle mount. It's reasonably priced, looks good and does the job. Thank you

Great bike bag. It’s waterproof, and decently sized for items that you should never be without on a bike (pump, bike multitool, tire pressure gauge, etc). Too small for a proper bike lock but that’s to be expected of a low profile bag like this. I’ve had it for 2 years and my only gripe is that RockBros doesn’t make any other bags in this same style. If they made a handlebar or trunk bag in this same colour and style I would have bought them ages ago so I could tote around my hefty u-lock.

Product is good quality (material, zippers, and velcro straps) and fits my road bike frame well. Can store a small pump and tools even light jacket etc. Great to use when you can avoid a backpack.

good size, well made, looks okay and works well enough. Large enought ot hold my very large cell phone. It has absolutely NO water resistance at all. In fact it seems to collect and hold water, but on top of that somehow the inside is waterproof so water cannot drain out... yes you read that right. As long as you do not need a water proof frame bag this is a very good bag and I would totally recommend it because it offers good value.

Very nice waterproof zippers, separate small compartment for small items. Fits my pump, tool set, wallet and a little room to spare. let's me still have two water bottles attached below easy to strap on. On my 2025 Specialized Diverge E5

I looked at many frame bags to fit my small bike. I decided to try this one to carry the essentials instead of a full frame bag so I can access my water bottles. It has a large compartment on one side which fits everything you see in the photo. And a smaller slim compartment on the opposite side. The bag stays in place using all the straps. They seem substantial but haven't tested it in bad weather. And doesn't rub against my legs. I like that it can be fastened in various places. If there is a negative, I would say the straps are a bit long but better long than too short.