The UM 70 is so versatile, as it's the perfect frame for weekends away or meetings at the office. This square frame will compliment individuals with round, heart, and oval face shapes. The frame is made from Zyl, a lightweight and strong plastic material. These eyeglasses are available in black, brown, and grey colors and are great for single vision, progressive, and bifocal prescription lenses. If you only want to own one pair of glasses, these should be the ones!