I was looking for a replacement/additional sport band for my Apple Watch, so I bucked the reviews and tried this, then wore it every day for a couple weeks.
Pros: Sturdy construction, stronger and more flexible than I expected
Cons: Poor usability. The strap passes through the loop before the little metal stub pushes through and locks in to the other strap. Therein lies the problem: A light catch of the strap on any object (including your pocket) and the stub pops out, freeing the strap from your wrist. This design (pulling through the loop and pushing down onto the other strap) makes it challenging to attach.
Overall, there are far better designs for not much more money. Buy one of them instead.