Vasuma Eyewear's Rectangle Eirenis Sunglasses pair a bold rectangular silhouette with tortoise acetate frames for everyday sunwear with a retro edge. Key attributes: Brown | Tortoise | Acetate | Polarized lens option (reduces glare) | Prescription-compatible | Polarized lens option | Photochromic lens option | Rectangular full-rim frame | Honey-brown gradient tortoise finish | Bold, retro-inspired silhouette | Dimensions & fit: Available in Small, Medium, Large | Listed sizes: Medium | Large | Composition & care: Acetate (frame) | Clean lenses with a microfiber cloth; avoid solvents and harsh chemicals. Store in a protective case and avoid prolonged heat exposure.