I needed these for a pair of Doc Martens boots with metal hiking-style protruding lace-holes (eyes? unsure what the part the laces are strung through is called). These metal lace holes had eaten through the laces that came with the boots in a matter of weeks--I think the edges were sharp and they wore the laces down until they broke.

I got these Rhino Laces because they claim to be virtually unbreakable, but that was absolutely not the case! The Rhino Laces didn't hold up at all and wore down/broke within a month.

I'm currently using a pair of seamed athletic-style laces that I got for $3 at the drugstore and they've somehow outlasted the Rhino laces by 3 months (and going strong). Super disappointing product--I'm a little peeved with myself for wasting money on shoelaces that were obviously too good to be true.