I just recently started training for a triathlon and stretch laces were recommended to help with transitions. After reading reviews, I was smart and ordered longer than I would have thought to and was glad I did. The aglets (plastic piece at end of lace) came right off the first time I laced the shoes. Once the tightening thing was put on though it didn't matter too much. I didn't get the zero-friction fittings and feel like they would have made a big difference in how easily I could get the shoes to open up. They do hold the shoe on my foot well (though feels a bit tight despite adjusting them)and I don't have to worry about lacing them or having to adjust them during my runs.