I bought all three sizes of these and I love them.  Turns out I don't own a handbag large enough to accommodate the large size insert.  I repurposed the large size insert as a knitting caddy and its perfect for that.  It holds a large skein of yarn and the pockets are perfect for my knitting accoutrements.  Im ordering a couple more to devote to this use as a crafter can never have enough WIP bags.