This claims &#34;superior strength&#34;, but when I tighten these laces I can feel and hear threads breaking. I feel like I have to baby them. I wish I'd bought stronger laces.<br /><br />I also purchased these twice in two different lengths because I missed that one of the product images was a size chart to correct the off-topic one that appears via Amazon's normal size chart link (the size chart is for shoes rather than shoelaces). Once I did find that chart, I still goofed somewhat. My sneakers have 6 eyelets so I picked the middle length that mentioned 6 eyelets, 45&#34;. The laces are just barely long enough; I needed the next size up. So those may be helpful hints for someone choosing the shoelace length with the chart.