BIRKENSTOCK Arizona Series Light Grey Casual Slide Sandals. The upper is crafted from wear-resistant and breathable material, featuring a natural cork footbed that conforms to the foot arch to bring comfortable and pressure-relieving wearing experience. With a laid-back casual style, it is suitable for commuting, outings and daily home use, and matches perfectly with all kinds of outfits. As a classic popular style of BIRKENSTOCK, it is deeply loved by fashionistas around the world and enjoys an excellent reputation.