They stand for trend-forward and fashion-inspired designs, combined with responsible, high-quality craftsmanship. BLACK SUEDE STUDIO X REVOLVE Nadya Mule Sandal in Black. Black Suede Studio is a quality premium footwear brand designed for the work-to-play lifestyle. Approx 95mm/ 3.75 inch heel. 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. Made in Brazil. They are known for their refined aesthetic and polished designs, which are all about elevated style, while never sacrificing comfort. Their collections are handmade in Brazil, in small batches.