Hanes 100% Cotton ladies underpants are the best! I have bought these for over 20 years and they hardly wear out - unless they get caught on something sharp and rend a small hole, otherwise they cannot seem to wear out.  The 100% cotton is so comfortable, and despite hundreds of hot washes and hot driers, the cotton holds up fine and the elastic never gets stretched out. What more can you ask for? Nothing! Highly Recommended!