I test used this organizer in an Aegner satchel, a Dooney and Bourke Satchel and my old faithful LL Bean Shoulder bag. And this little organizer fit perfectly in all three of them. I love it, love it, love it  fits my computer backup, make up, address book, and monthly planner with ease and efficiency! Great job!!! I" highly" recommend this organizer. Spoken by an organization freek!