Missy is a superb partner to the lovely bag Mary. Missy is a liner to put inside a bag enabling you to keep all your items organised and safe. It means too that you can swap Missy from one medium to large bag to another to avoid emptying the whole bag.  Or, once made, you could adapt the sizes to fit a smaller bag too.
 
There are elasticated pockets on the outside and straight pockets on the inside, in fact pockets galore!