I bought this as an option to go between batwings on my F1 frame for longer trips and it fits as I hoped it would. It's a great dry bag away from the pack too. It has become my go-to kayaking carryall.
Great product! It's a very durable dry bag that can easily be zipped to my F1 Mainframe or used alone.
I needed to upgrade my portage bag for this year and decided to go with Eberlestock on recommendation from some friends. I wanted a large, non segmented bag that was waterproof and durable. This dry bag with an F1 frame and two batwings is more then enough space for my week in the backcountry. The frame makes the weight so comfortable to carry. Excellent product from an excellent company!
Seems like the perfect bed for my mainframe pack for now. No reason to think otherwise but I’ll update if there’s any concerns
Come really handy with the Mainframe. Convert the frame to a backpack in a minute.