These Metallic Silver, Copper and Anthracite flip-flops are sure to turn heads this summer. Neutral and trendy, they can be combined with everyone’s wardrobe! Madrid is the most elegant women’s sandal among the Birkenstocks, offering comfort to the foot but not the most support to the ankle. This Birkenstock gives the foot a free and airy feeling. Great to wear on summer days with a sporty outfit or under a bikini. No more painful or sweaty feet! The strap is made of Birko-Flor. This material is very soft for the skin, which reduces the risk of blisters. Birkenstocks have a large fit. Usually you need a size smaller than your regular shoe size.