I ordered these liners as I can't stand barefeet in shoes and the friction/blisters that can result with the inside of the shoes rubbing against the feet.  I wear a women's size 11 1/2 which is equivalent to a men's 10 1/2.  Regular womens' liners were too short, didn't stay on and snapped off.  I even sent Nordstrom's customer service a suggestion to make women's liners in X-Large which didn't materialize into anything.  So I was thrilled to try the men's liners (which I bought in different brands).  Ironically, my son bought a pair of Sperry boat shoes (barefooted) and got blisters/bleeding the first time he wore the shoes.  I am delighted to say I shared this info with him and he can hardly wait to try them.  I know that it looks cool to wear certain style shoes with no socks, etc. however these liners provide foot protection and remain well hidden inside the shoe.