Try on the RB4171 Erika at your local The EyeDoctors Optometrists location. These tortoise designer sunglasses from Ray-Ban Sun are perfect for enjoying time outdoors and catching some sun. Made from plastic, these sunglasses feature a design and can help you see clearly with prescription lenses. At The EyeDoctors Optometrists, we can build a complete pair of Ray-Ban Sun RB4171 Erika just for you, with custom lenses designed for your vision needs.