I bought these for my&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Mizuno-Women-s-Wave-Enigma-Running-Shoe/dp/B004KSQGYC/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Mizuno Women's Wave Enigma Running Shoe</a>&nbsp;and they weren't long enough to double knot. My shoes are low top and I wear a women's size 8.5, so my feet aren't that big. I don't think you would be able to tie these at all if they were used in a man's shoe. I loved the color and quality of them, but they came untied twice during a 5k, which is unacceptable for me. I'm sure these would be perfect in a child's shoe or even a small size adult shoe, but they just weren't as long as I would think an "athletic" shoelace would need to be. My shoes came with a little over 50" laces, so I would think anywhere around 50" would be more appropriate for "athletic" shoelaces.