Yoga Socks for Women with Grips, Non-Slip Five Toe Socks for Pilates, Barre, Ballet, Fitness

what % cotton are they? 80%? 90%? 100%?

How can I return these socks they are way too small for my husband's feet

Where are they made?

Are these socks durable? Yoga socks I've purchased previously got holes in the toes after only a couple of wears.