Papillio Women&rsquo;s Salina Sandal Glossy Wrinkles Viola Size 40 N EU/9-9.5 N US birko-flor Birko-Flor upper is made of acrylic and polyamide felt fibers to create a soft fabric with a leather-like finish. Easy slip-on style with two buckle closures ensures a secure and fully adjustable fit. Raised toe bar is designed to encourage the natural gripping motion of your feet exercising your legs and aiding circulation. Suede-lined cork footbed offers excellent arch support a deep heel cup and roomy toe box and molds to the shape of each individual's foot. Neutral heel profile and deep heel cup keeps the natural padding of your foot where it belongs under the heel distributing your body weight more evenly.