Birkenstock Unisex-Adult Arizona Birko-Flor Nubuck Sandals

Product Information

The versatile two-strap sandal comes in a number of different materials and color combinations. There are models for work and leisure, models that can be worn inside and out. There are styles for women, men and children. The Arizona unites fashion trends and generations. The classic sandal is at once both a fashion statement and a fashion anti-trend – depending on the look the person wearing it is going for. For some it's a provocation and a calculated style rule breaker, for others it's an expression of a certain lifestyle or a sign that they're part of a certain (professional) group. Or maybe it's "just" a sandal like no other. If you are between two sizes, choose the next higher, because feet are minimally greater under load

The sandals weren't immediately comfortable but they have softened and I'm wearing them every day now and they're fine. Those who don't want to give up the familiar comfort of these sandals when they go to the health and wellness spa or the beach can also find their favorite pair in ultralight, highly flexible EVA (ethylene vinyl acetate) in a broad array of trendy colors.

What does M and N mean in Birkenstock sizes?