Don't sweat the technique
Joined: May 2005
Posts: 174
Likes: 0
From: Logan Square, Chicago
Bikes: 1973 Fuji Flair fixed, 1971 3-speed schwinn breeze cruiser, 1980s Panasonic Village fixed
there's a reason why they're called "custom jobs." you don't have to order anything that big, you can ask for whatever strap length you please, and add as many stabilizing straps as your cycling hearts desire.
Isaac customized the strap on my bag to accommodate large tits and narrow shoulders. I'm sure he can make your backpack dream come true.