I bought this because I needed a lightweight elastic belt to hold my hiking pants up for backpacking.  I wanted something very light,  easy to clip in and out,  and elastic.  It really did not work for this purpose just due to the nature of my pants.  However,  I thought,  hmmmm  my prana jeans sometimes slide down when I wear long shirts and no belt.  Why have I not worn a belt ?  because my belt buckle is too big and stick's out under my shirt.  So I checked it out for it's intended purpose and voila.  Suffice it to say I had no idea how much I needed this thing  !!!!!  It's really awesome for the purpose it's advertised for and the elastic is substantial enough to hold up,  but not so rigid that it pulls up to far.  It makes my skinny-ish jeans so comfortable that I wear them more often.  It's worth the money,  higher quality in general and easy to adjust.  I had no problem whatsoever with it coming un-clipped.