BUNA Eyeglasses by Gotti. Color: Black, Dark brown - white figure, Light brown, Dark brown, Size: 53-20, Material: Genuine Horn, Collection: Götti Switzerland.. Meet the Gotti Buna, a sophisticated oversized eyeglass frame sculpted from genuine buffalo horn – the material prized for its feather-light feel and rich patterning. Shaped with gentle, rounded contours for an elegant look. Optional stainless steel temples refine the overall look with a touch of shine. Choose from richly toned colors that underscore the frame's sculptural silhouette and minimalist Swiss design sensibility.