Does anyone have a recommendation for a liner type insert for a Kelly 25 (sellier)? I have a 7RP K25 sellier L’insert but I’m not completely happy with it (not because of the insert size or quality, but based on what I’m learning about my own needs and peculiarities). The K25 capacity is already so limited and I think an insert with pockets actually makes the bag hold less. I like the idea of using a somewhat stiff insert that protects the inside of the bag and also helps maintain its structure, but isn’t too thick so that it reduces the overall capacity. The fourbi 20cm seems a bit too tall to fit in a K25 and has more fabric bulk than needed. I tried making a prototype of a felt liner using leftover craft supplies at home, but it kept moving around inside (like a trash bag loose in a trash can) which annoyed me. Any suggestions?