Tights with open crotch

I really love tights. The only problem with it is that you cann't have sex while wearing them. one patent that suppose to solved this issue is the open crotch tight that allows the woman to keep wearing them while having sex. 

The major problem with these tights is that they have very little demand. They often raise very negative connotations and have the name of "whores tights". Because of the low demand, it's hard to find a variety of models and  the existing models are usually pretty disappointing. And still, I have managed to scrape a few good examples:

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Example 8


Example 9

Example 10