love chacos and always wear them BUT... this brand was the first one that actually broke down on me.  the side straps DO NOT go all the way through, like they do on the unaweep models.  if the strap is not connected, it WILL pull out at some point.  this did.<br /><br />  we shoved the strap back in where it pulled out using a butter knife and then shot in some gorilla glue (only thing available).  it worked temporarily and had to be done again.  the last time, the gorilla glue expanded to form a lump.  we crushed it down, so now, they seem to be holding.  still, its just a matter of time.<br /><br />  chacos are a great brand, but stick with the z1 or the z2 if you *really* use them.