I suggest everyone have a pair of these.  They are so comfortable! They only come in whole sizes.  I wear an 8 but purchased a 7.  They tend to stretch out (just a little)  8 would have been too big and the 7 are good but could use a hair bit more room in the toe but I love them and wear them all the time. I wear in the summer without socks and in the winter with socks!  Thumbs up!