I love these shoe laces!  I think the only thing wrong with them is I wish they were a little longer.  I use them in 2 pair of my sneakers.  I am a house wife and I have hardwood floors.  Our house "rule" is no shoes in the house.  Well being home all day was really starting to hurt my feet so I got a brand new pair of sneakers and put them in it and wear them in the house.  When I go outside I kick of the new sneakers and put on my old sneakers (they have the elastic in them too).  It works great! This way no dirt comes in and I'm comfortable for the first time in 3 years!  Thank you!