Self-locking system: The laces were tied yesterday. The speed lacing system is specially designed to facilitate and speed up putting on and taking off. USE ANYWHERE AND SAVE TIME: Ideal for everyday life as well as for sports and entertainment, such as fitness, running, triathlon, yoga or hiking. At 120cm in length, it's very versatile. It's for everyone: a time-saving option for athletes, an easy-to-use option for kids, an easy-to-use option convenient for seniors and people with disabilities. Inadvertently detected laces are excluded. Great comfort: The speed lacing system is much more comfortable than normal lacing. The elasticity of the laces distributes the pressure evenly on your foot. PERFECT FIT AND BETTER VISIBILITY: A sturdy cord stopper ensures a snug fit. The incorporated reflective material provides better visibility.