I have used these for probably the last 5 years and they are the BEST. I've used elastic laces since they first came out, buying my first pair at Kona for the big Triathlon there. These are better because the top round piece stays flat against the shoe rather than flopping around or sticking up in the air. The tails of the laces are securely held down under the criss-cross part of the laces so they don't work their way out to bounce around. I use them on all my sport shoes for Zumba, Tai Chi, Body Pump, and running. It's the only brand I use now.