Oliver Peoples Birell Sun Sunglasses pair a pillow-frame acetate design with high-performance mineral glass lenses for everyday wear. The model balances vintage details with durable construction for reliable sun protection. Key attributes: Tuscany tortoise | Acetate | 100% UVA/UVB protection | Anti-reflective coating | Mineral glass lenses | Includes original case, cleaning cloth, certificate of authenticity and guarantee | Universal fitting nosepads | Three-pin construction for added durability | Pillow frame | Medium lens front | Custom filigree on corewire | Dimensions & fit: Size: 52-18 | Temple length: 145mm | Best for most faces | Face coverage: Standard | Composition & care: Acetate frame | Mineral glass lenses | Clean lenses with the included cleaning cloth; store in the original case when not in use.