Updated for March 2022: The Full Framebag makes complete use of that top tube real estate. And now comes with Laser cut Velcro that has been laminated to a non-slip backing.
While the mini bag might help you keep some of the heavy essentials out of your jersey pockets, with the full framebag you could even leave your jersey at home. Just don’t forget to pack sunscreen - There’s room for that too.
Comes with a non-driveside pocket for phone + wallet. Plus a full length waterproof zipper on the driveside for everything else. Connects via velcro and a line-loc strap around the downtube to prevent swaying. Available in two different sizes, both with a narrow anti chafe design for those who never skip leg day.