ZandoWomen Non Slip No Show Socks Boat Line Ankle Socks Athletic Low Cut Socks Short Socks for Flats Invisible Socks

Where are these made?

Does anyone had discomfort on heels, do yo the gel grip on the heels? Please respond only if you have actually wore them.

Why does it take so long for delivery, 1 1/2-2 months. Where are they shipped from.

are they cotton