https://www.thermaltake.com/bm01-brooks-bag-adapter-8l.html
BM01 Brooks Bag Adapter (8L)
The Thermaltake BM01 Brooks Bag Adapter (8L) is designed to perfectly complement the Brooks Scape Case handle box 8L with its patented, user-friendly...
brooks bagadapter8l
https://www.bikeradar.com/reviews/bikes/road-bikes/brooks-barbican-messenger-bag-review-2
Brooks Barbican messenger bag
Apr 8, 2019 - Very old school courier bag
brooksbarbicanmessengerbag