Wife loves these.  She purchased a pair for her workout tennis shoes.  She also is a very healthy lady but has been studying best practices for back health.  Bending over to tie your shoes should only be done a certain way which can be cumbersome.  She found this helps avoid the very unhealthy way we all tie our shoes.  Now her shoes are almost slip on while still being tight enough to provide complete support.  Easy to install.  Over priced in my opinion, but hey, a happy wife is a happy house. ;)