It took awhile to get used to putting on the shoes, and I've learned that wearing toed socks restricts the blood flow in my toes to the point of numbness, but bare foot these things are great.  I use them lifting weights and without adding leg exercises my calves and ankles have grown from my toes being engaged in my stablity.  Running is a whole new experience.  And they take up so much less room in my luggage when I travel.  Love 'em.