The first link, there seems to be nothing special about the tallis katan they are selling as "Skver." It appears to be like any Hasidic tallis katan (wool, "tzeirei holes", etc.) In the second link, when you click on the "Skver" category, it leads you to a mesh tallis katan. That doesn't sound Hasidic!
What is a "Skver" tallis katan? How does it differ from a normal tallis katan? Perhaps it is referring to a special way to tie the tzitzis, perhaps according to some "Skver" method?