[Photochromic Technology]: HD large-frame lens experience seamless visual comfort with lenses that adapt to changing light conditions. [Comfortable & Secure Fit]: Featuring adjustable rubber nose pads that conform to different nose shapes, these sunglasses offer a non-slip grip and enhanced comfort, even during prolonged wear and intense physical activities. [UV400 Protection]: Block out 99.99% of harmful UVA and UVB rays . Not only reduces glare but also minimizes eye strain, making your outdoor experiences and more enjoyable. [Ergonomic & Design]: Designed with flexibility and durability in mind, the temples provide a non-slip grip and a field of view. The , bendable material ensures these glasses can withstand the rigors of active sports without discomfort. [Multi-scene Application]: Whether you're cycling, running, driving, mountaineering, leisure, sports, hiking , or engaging in other outdoor sports like skiing or fishing, these sunglasses are your perfect companion. Name: Lens material: PC photochromic lens Frame material: TR-90 Transmittance: Before photochromic (49.15%)/After photochromic (8.98%) Sport Type:cycling Color: D: Bright & Transparent - Light Gray Color-Changing Local Rich Gold Material: PC+TR90 Package Contents: 1 X glasses case 2 X replacement nose pads 1 X glasses bag 1 X lens cleaning cloth Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.