These Lock Laces are absolutely brillant.  I bought these as an experiment for use in my Autistic Son's Shoes.  My Son usually uses shoes with velcro but as he is getting older, velcro shoes are getting harder to find in his size.  These Lock Laces give my Son the opportunity to wear more stylish shoes and gives him a far better selection of shoes to choose from.  He can slip the shoes on and off himself and they work and hold up to a 12 year old boys abuse :) Great product!!