I bought a pair of black Savannahs five years ago and loved them so much that a few months later I purchased a pair of brown ones. The black ones broke between the toes last month. They have lasted extremely well and the brown pair are still going strong. I have noticed that the sizing has changed since my original purchases. My new black ones bought a month ago are a size larger as a new 38 is now too tight in the straps. Unfortunately I wore them a couple of times before realizing that on a hot day they are uncomfortable. I then bought a pair of size 39 and they are perfect. Unfortunately the shop only had the one pair so I couldn't compare fitting at the time. Now have an as new pair of 38s to on sell!