BUNI SUN Sunglasses by Gotti. Color: Ash, Slate, Mocca, Sand, Teal, Blush, Size: 54-15, Material: 3D Bionic, Collection: Götti Dimension Bionic .. The Gotti Buni Sun elevates sustainable luxury with its refined square silhouette and a bio‑based polyamide build (derived from castor bean seeds). This translates into featherweight comfort, resilience, smaller footprint, and a tactile matte finish that feels as refined as it looks. Refined colorways complement both casual and tailored outfits. Crafted entirely in-house in Switzerland.