My husband has a Boeing 55 and I have a Keepall Bandouliere 45. He's had that bag for almost 3 yrs, and used it every other month for the last year (travels a lot for work). It looks great, it holds a ton of stuff. The canvas and lining feels a lot thicker than the Keepall, so it feels sturdier, but that also makes it heavier. I was deciding between the two when I opted for the Keepall because I like the crossbody strap.