This pack is used for one or two day bike packing adventures. I mount it to a Specialized Diverge 58CM with Apidura's saddle pack and top tube pack. Very durable and well made. I have not used them in the rain so I can't speak to the water resistance. The grey color is a nice accent to my bike.
The Apidura saddle pack is very well contructed with high quality materials, excellent fastening system and it looks good too. Easily carries several tops, shorts and essentials for a multi-day Inn to Inn trip. It even has room for a small narrow thermos! My pack is a size small. I like its versatility to roll down small
(though it looks a tad sloppy when folded small) it's surprising how volumous it is when expanded, plus the top bungies can hold down my pair of sandals or vest. When loaded, I notice the bike remains stable and not out of balance. The loaded bag moves minimally. I opted for the non waterproof version. If any contents need to be waterproof, simply wrap in a plastic bag. Apidura makes high quality gear that is practical.
A solidly constructed bike bag. There's plenty of room for everything you'd want to carry. When getting off your bike, remember that the pack is there. I almost tipped over when my leg clipped the pack because I forgot it was there.
Just took it on a 2-Day ride on the Katy Trail in Missouri. Check it out if you haven't been on this great trail and it is now linked to the Rock Island Trail. 267mi! After I figured out how to correctly tighten the straps, it was very secure and I hard noticed the pack behind me. I crammed a lot in there and didn't even max it out for a two day non-camping trip. There was no rain, but I felt comfortable with the quality of the material that my stuff would stay dry. I plan to add the front pack for a longer ride in the fall.