BUNI Eyeglasses by Gotti. Color: Ash, Slate, Mocca, Sand, Teal, Blush, Size: 54-15, Material: 3D Bionic, Collection: Götti Dimension Bionic .. The Gotti Buni brings together sustainable innovation and refined aesthetics. This Swiss-made square frame is produced using a single-material method with bio-based polyamide sourced from castor beans. The material is both featherlight and strikingly durable, while reducing enviromental impact. Available in harmonious shades, the Buni offers refined color expression and silent elegance for those who value both design clarity and sustainable luxury.