I had a big boo-boo the other night. The buckle failed on the shoulder strap of my Kolstein bag. Luckily I don't use the shoulder strap to put the bass on my back or shoulder, but rather as another handle by hooking my arm through the strap as I handle the bass. There is only one critical maneuver where I actually used the strap soley to lift the bass, this being where I would turn around to walk backwards up a short staircase and have to open a door. Like the stoop to my apartment building. When the buckle went my bass bounced off a few concrete stairs and the wrought-iron handrail simultaneously. My trust in the strap was probably augmented by the fact that I was finally home after a 14-hour playing day. Most of the damage is cosmetic, but I did get a nifty crack in the peg box. Photos. What really ticks me off is that all of this damage was caused by the failure of a $.50 part. I've since researched and found a fix, probably applicable to most bags. Carabiners, available from any place that carries climbing equipment, can be substituted from the clasps. They retail for about $5. You can get them here: Eastern Mountain Sports Get insurance on your bass.