Farpoint Fairview

Do you need 40L? Cause the most comfortable packs with good weight transferring hip belts that stay close to your body will be hiking packs, not travel packs. My 25L Osprey Sportlite pack is a far more comfortable backpack than any of the travel packs; however, the problem with hiking packs is that

What airline(s) are you flying? They have different size constraints, and the Farpoint/Fairview isn't allowed in-cabin on some because of its depth. I ask because I've had to fly on some constraining european airlines and have acquired and used the Gregory Border Traveler 30 and the Sherpani Santiag