This frame size is Medium with a hinge to hinge measurement of 129 mm. Ideal for average faces. LENS MATERIAL: Costa's most high tech lens - 580 Glass provides superior clarity, ultra scratch-resistant, 100% UV protection and the best polarizing efficiency available. LENS COLOR: Rose Gradient lenses offer a new, heightened contrast of your view, with hues of color as rich and warm as the sun you’re under. Inspired by the ever-changing colors and moods of the sky, our Gradient Lenses elevate the looks of your favorite frames from the outside in, while enhancing your view from the inside out. 100% UV PROTECTION: To protect your eyes from harmful UV rays, these Costa Del Mar sunglasses include lenses that are coated with 100% UV protection. FRAME FEATURES: Ulu feature a round, sunset tortoise frame and rose gradient 580g lenses. PROTECTIVE CASE AND CLEANING CLOTH: Costa case and cleaning cloth included to keep your Costa's safe while you are getting after it.