The texture of the product, relieves quickly. The cushioning is very good.
If there is a black dot, is the size of the product, "forcing" you will not find the shape / size of your shoe that will push you to go to fashion with the scissors cut the risk of bad product. I could compare with another brand "Noene" and I have a preference for this product, while the price in lower half.
By cons, this sole you can not combine with the running shoes, which may also have a form, and both soles, may give you more discomfort than anything else.
For military / safety shoes boots, you have this product a good choice.