BLACK SUEDE STUDIO Sona Flat in Burgundy. - size 41 (also in 36, 37, 38, 39, 40) BLACK SUEDE STUDIO Sona Flat in Burgundy. - size 41 (also in 36, 37, 38, 39, 40) Dyed cow hair upper with rubber sole. Fur origin: Australia. Slip-on styling. Leather footbed and lining. BSUE-WZ300. SONA. Black Suede Studio is a quality premium footwear brand designed for the work-to-play lifestyle. They are known for their refined aesthetic and polished designs, which are all about elevated style, while never sacrificing comfort. From the height of the heels and suppleness of their materials, to the shape and construction of each silhouette, every detail is created with the goal of all-day wearability. Their collections are handmade in Brazil, in small batches. They stand for trend-forward and fashion-inspired designs, combined with responsible, high-quality craftsmanship.