Roswheel UK/Europe Aerodynamic Aero Lightweight Road Bike Top Tube Cargo Frame Bag

I love how small this is. It basically imposes no changes to my biking. Seat post bag can get in the way of lights or reflectors but this just sits on a top tube and offers some small but much appreciated storage space for the essentials.

Pros:The materials are surprisingly good for a cheap bag (although I suspect the zipper may be the point of failure in the years to come)Doesn't look terrible. I also got the matching seat bag (although that one is branded as "Sahoo" instead of "Roswheel")It's small and compact. Certainly seems "aero" and doesn't add a ton of bulk or weight at all.Smart design with a sloped front end avoids any conflict or rubbing with the bolt on the back top of the headset.Cons:It tends to rotate a bit on the top tube as I ride but I suspect that's the case with any of these bags unless you get a bolt on model. Not a big deal.It's small. Like really small. If that's what you want then great, but just be aware. It won't easily fit an iphone 8 in a small case without distorting the bag. I currently just use it for 3 or 4 granola bars and that's about all that will easily fit inside which is fine for me, but I do perhaps wish they'd made it just a bit bigger.

I used some 3m Velcro tape to attach this to the top tube of my bike instead of the included straps (I cut them off). It looks sleek and holds on great. Having my snacks on the top tube is so much more convenient than trying to dig food out of my jersey back pockets. It's also ended up being cheaper for me. Instead of buying gels or other pre-packaged foods that fit in a jersey pocket, I just put my favorite snacks in the bag. Candy, dried fruit, nuts, whatever. Then I wash it occasionally.My only small complaint is that the sides are not stiff, so it doesn't look super streamlined. That said, I have another top tube box with plastic sides and it is way harder to get food in and out of it, so it's a trade off. Can't have everything, I guess. Functionality is 10/10.

Bought this for nutrition on my bike so I wouldn't have to reach around to my pockets. Fits great, looks sleek, and stores all my nutrition

It destroys the frame (Full of scratches) don't waste your money. I'm just throwing these away.

Quality workmanship on this bag but the internal storage space was too small for my use. A couple of goo pouches and a small charging stick filled it up.

Bought this for my triathlon bike and it is perfect. Not too big and holds my fuel nicely without being bulky.

I bought this bag after using a friends' for a triathlon race. I like this one better since it is bigger and I can put my gels and car key without using the pockets on my bib jersey. Zipper runs well and is water proof.