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!!!!
This is a game-changer. I've been using it for a few weeks and have only been happy with it. For the first few uses I checked it with my old, reliable analog gauge and always found it exactly right. It's so nice to get those few pounds in to make my ride perfect. I still carry a manual pump and CO2 on my ride, but am considering switching to one of these for on-bike usage, too.
Start with a clean chain, wax it by dipping it in 75 degree wax, put it on and enjoy days of riding, if you have 2 chains just put the clean one on, and you're ready to go, no dirt, no oil, no muss no fuss.
