These are by far the BMW of footwear....!!! Suffered with knee, leg, foot pain/numbness for over 10 years with Doctors saying nothing can be done. As the days go by, my pain and numbmess have almost completely disappeared. You have to take your time to transition to barefoot 0 mm heel to ball drop as your body will be using different muscles to realign itself. I started wearing these just a little bit each day, but now they feel so wonderful I do not want to take them off, they do indeed fit like a glove (wear with thin sock or barefoot is even better). My first pair of Merrell was in winter with a snow boot was great, but these minimilist shoes are by far an entirely new experience in footwear. I have had them just over 3 weeks and have already ordered another. Slowly I will replace all my footwear. Thank You Merrell!!!