I always went on a business trip a few years ago. There was always a small product introduction on the high-speed rail TV. I think it's very interesting. It's very convenient for me who never wear shoes every day.
It is a shoelace, Xpand's shoelace. First of all, this shoelace is very interesting. You don't need to tie the shoelace. You never need it. Adjust the length of the shoelace. Then don't worry about the two shoelaces. Includes a pair of elastic Xpand laces, 4 lace tabs, and 4 shoelace clips.
This is what I see the high-speed rail promotional map! 
Its shoelaces are made of zero-memory, elastic-lasting elastomeric rubber, and are durable. The development team stated that the shoelace has a poor quality rate of zero, and its strength is sufficient to support various sports environments. The color of the laces is also very high. The diversification, the selectivity will be much greater.
In fact, it took a shoelace many years ago, such as salomon's quick slip-on system shoelace and nathan's cross-country self-locking shoelace. These two individuals I personally think are the same type, but the disadvantages are also obvious. It will be a little more fixed. When you are in exercise, you need to tighten your shoelaces. If you need to loosen more in your daily life, you need to loosen your shoes.
But I have a better suggestion for Xpand's shoelace, plus the reflective material, which makes it safer in night running situations. This shoelace meets the daily life and running and other sports, other projects do not use this ~
Its specific operation is as follows.... 
This was already on sale in 2016 and everyone thought it interesting to look at it.
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