Works as designed. Not ideal for all size drums and all mounting spacing (mounts close together result in straps squeezing your neck), but a sturdy item and functions ok.
Not sure if you're supposed to use them as packaged and pictured...but the only way they fit is if you unclip and swap sides and wear like a jacket.
That said, it works pretty great. And I'm marching a vintage Chrome 32" bass drum. It ain't light, folks.