I can't speak to the suitcase, but years ago, a fellow road warrior stopped my in an airport and mentioning my hunch-backed stance, had me try out the shoulder strap, holding up his 22 lb shoulder bag. The same Eagle Creek shoulder strap has been on all my shoulder bags in the last 8 years. Just one has outlived all my bags and it is so comfortable! Currently, I carry a 28 lb laptop case, crammed full of work crap and a 17" HP laptop, with no difficulty. I swear by Eagle Creek, as a VERY frequent air traveler.