Birkenstock Unisex 'Men's' Arizona Mocha Birko-Flor Sandal, Mocha (43 M EU - 10-10.5 US Men) Synthetic Birko-Flor Upper is lightweight, durable and feels soft to the skin. Synthetic sole Product update. Please read. **** Newly updated model (latest production); Arizona Mocha may now ship in newly updated Birkenstock shoe box (new blue design with handy size measuring guide printed on inside of shoe box). Sandals may now also come with black (not yellow) lettering (black printed logo and size information printed on footbed). **** Synthetic Birko-Flor Upper (Not Leather) - a synthetic material made of acrylic and polyamide felt fibers that is comfortable and tear resistant. This material has a synthetic leather-like finish with felt lined backing. The classic Birkenstock cork footbed (not soft footbed) - takes some time to break-in and mold to the shape of your foot; features pronounced arch support, a deep heel cup, and a roomy toe box. The footbed conforms to the shape of your foot. Birkenstock footwear is designed and sized to provide a roomy fit allowing your toes and feet to wiggle and be free so they tend to run large. Difference between Normal/Regular (M) and Narrow (N): The letter "M" indicates "Medium/Regular/Normal Width Footbed", this is purposely wider than other sandals for added comfort. The letter "N" indicates "Narrow Width Footbed". You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!