The Peak Design travel bag is 4.52 lbs. I find that to be on the heavier side, even for a 45L bag, and would prefer < 3.5 lbs for something I'll be carrying on my back. The 42L Osprey Ozone with wheels is 4.53 lbs. The Tech Pouch has some interesting organization but also a bit heavy for my preference.

Also, um, are your legs ok? They are not connected to a torso?