Product Details Brand: ROCKBROS Lens Material: PC lens Frame Material: TR90 WEIGHT: 28G Features: Adjustable rubber nose pads + non - slip rubber temples, suitable for myopia prescriptions Package Includes: 1 cycling sunglasses, 1 alternative sunglass case packaging, 1 original sunglass case, 1 polarization test card, 1 sunglass pouch, 1 lens cloth, 1 certificate of conformity, 1 myopia prescription Features: PC Color - Changing Lenses: ROCKBROS sunglasses intelligently change color with light. Under the intense sun, the color of the PC lens gradually deepens, blocking the bright light. When indoors or in the dark, the color of the lenses automatically lightens. Polarized PC Lenses: Effectively resist glare and scattered light. Polarized lenses can effectively filter reflected light or glare from roads, water, snow, glass, etc., ensuring a clear view and effectively preventing visual fatigue caused by glare. Lightweight: Weighing only about 28 g, this pair of sunglasses is compact and lightweight, comfortable to wear, and ideal for trips that require light - weight items. Suitable for All - Day Wear: Lenses with variable - density shading automatically increase or decrease the degree of color change according to the intensity of UV rays, resisting harmful light throughout the day and fully protecting the eyes. TR90 Memory Frame: An adaptive - fit frame, highly durable and lightweight, flexible, reducing head pressure and comfortable to wear. Smudge - Resistant, Reflective, Anti - Glare Coated Lens: The lens surface is not easy to absorb moisture and dust, and is not easily corroded by rain, allowing you to maintain a clear line of sight at all times.