I'll start off by saying I've never been able to figure out how the light mount is supposed to work, even after emailing Restrap and getting a vague response back. That doesn't detract from the rest of the bag. Big enough to stuff a rain coat, snacks, and a bar mount headlight inside for a long afternoon ride. No problems with it flopping about, and construction feels solid. Haven't tested it out in the wet, but if it's like my other Restrap bags, it should keep everything inside nice and dry.
Purchased the medium size bag about 6 weeks ago and used it on at least 4, 100 - 140-mile road rides, (plus shorter rides) around Tucson AZ. Easily holds 5 energy chew bags, cell phone and a snack size sandwich bag for stashing cash and a small Allen wrench tool. The outside pouches are nice to store empty energy chew bags. The topside of the top tube on my bike is flat and over 1.5" wide, so the bag sits securely and without movement once strapped to the tube (a round top tube might have different results). The double zippers are a convenient feature allowing quick and easy access to either end of the bag. Overall, really satisfied!!!!
Mounts easily onto my Salsa Journeyer using the given bolt spacing and the bag length is perfect for wrapping around the stem. I took a star off because of difficult packaging of the instructions to the bungee strap and no bolts to mount the bag. The bag is made of soft material, so I could see someone over stuffing it and possibly causing knee issues if the bag bulges out. Although I have a 60 cm long wheel base bike so it is not an issue for me as my knees come up near the end of the bag. The bag width is about the same as my top tube, which is what I expected. Just enough for my carrying purposes (bars, suntan lotion, day-use stuff).
I ride mostly gravel events and have tried various storage solutions for all-day nutrition. My issue with bags I've tried were related to how secure it was on the frame (i.e. wobbly vs stationary), capacity, how easy it was to open/close whilst riding, and how hard it was on my frame (I don't have top tube rivets so straps are my only option). This bag ticked all the boxes: easy to attach and sits securely even during the washboard gravel sections, easy to access, and the frame paint is not affected. And, it's very lightweight!
