This sandal is a combination of the lighter style Sonora style designed with an Adventure Crosstown sole. Enabling comfort all day long in a variety of scenarios. The straps are three, thinner structured adjustable straps ensuring a perfect fit. Two straps over the front of the foot and one positioned around the rear ankle. Along with the adjustable straps and anatomical shape design of the Crosstown Adventure sole. Has a reinforced heel area with support across the whole inner base sole made from hardwearing synthetic material Birko-Flor®. The outer sole uses classic cork and latex with a direct PU. A sandal offering flexibility and amazing grip, an activity-led sandal choice.Sonora Birko-Flor Nubuck Sandal FeaturesBirkenstock Unisex Sonora SandalUpper: Birko-Flor Nubuck (Birkibuc)- easy to care for and hygienic PVC, which has been lined on the inside with a soft, breathable layer of fleece. The appearance looks like nubuck leatherInsole: SuedeAnatomically shaped cork-latex footbedSole: PU- reinforced heel areaTwo straps and a heel strap, each with an individually adjustable metal pin buckleMade in GermanyNarrow foot widthBirkenstock\'s Ref.MPN: 1013763, 1013764Colour: Black and MochaSizes: UK 4.5, 5, 5.5, 7, 7.5, 8PM Ref. 1302230