1 - https://www.osprey.com/us/en/product/farpoint-40-FARPNT40_52...
Also, as mentioned elsewhere, the backpack is much more likely to be allowed onto a flight that is doing the "mandatory" gate check thing that is common on smaller regional jets/turbo-props.
Edit - FWIW, my last trip to Scotland, I had 2x shoes (running, hiking), clothing for 4 full days, 1x running clothes, a Patagonia Nanapuff jacket, baseball cap, belt, rain coat and rain pants, and toiletries. All fit with ease. In the second pack (an REI UL pack), I had 2x camera bodies, 3x lenses, iPad Mini, chargers/cables and spare batteries for all, binoculars, sunglasses, headphones, and passports/travel documents. Not sure I could have crammed it all into the Osprey - probably if I cut back to a single camera/lens and went to 3 days clothes (doing laundry either way, so 4 was overkill).
This bag is really intended to be a true do-it-all pack. I've seen other brands with removable straps, but I've found those tend to be very minimal straps and not all the useful. I have other lightweight packs without waist belts.