love the look of the single strap Madrid , a little more femminine than the double strap . right out of the box these be the perfect fit ... be a little concerned about break in period etc. . . but as soon as I put they on they be amazing - wear they around the house in the evening , in the morning put they on after my shower and go for a 2 hour walk absolutely no sore spot at all ; do not want to take they off . would highly recommend Birkenstock sandal to anyone , feel like you be walk barefeet . will definetly invest in a few more pair in different color . size be good , normally wear a 9 - 9 1\/2 end up with the 41n and they be perfect . can definetly notice the difference from the copy cat brand sell in Walmart etc. ... no COMPARISON get the real thing you will not regret it : -rrb-