When I got my first pair as a gift, I thought they were too small.  My toe went straight to the end.  I called two different retailers, and they both immediately began to ask me a few questions, and I am glad they did!  These shoes are not made to fit like the shoes we are used to in the US.  Both retailers (who sell a LOT of these shoes) said that my toe should go to the end.  They said the shoe should fit snug, like a sock.  They both told me the shoes stretch and will mold to my feet, and if I go up a half size, I will be very disappointed, as the shoes will slip off in the heel.  I am GLAD I listened, as these are now my most favorite shoes.  I know several people that own them, and all of us agree they hold up very well, are very comfortable, and are well made.  They do stretch and they mold to your foot. I wear mine without socks, or with no-show socks.  I suggest trying them on however you plan to wear them, as socks do take a little room, and if you know you will ALWAYS wear them with socks, you may want to think about going up a half size. I will buy more, and what makes it even better is I am helping a better cause that puts these shoes on the feet of those that need them more than me.