Really cleans up the shoe!! I just ordered 3 more sets. And I was even able to use one pack to lace two pairs of Adidas and even had one size left over.
These are pretty easy to use. After the first pair of shoes I did grab a needle nose pliers to go a little quicker.  Probably want to line up what size you want in each hole prior to pulling them through because they aren't that easy to remove.... you can pull them straight out but that might wear them out quicker.  I hope they last a long time!