The fragile, lightweight frame is more comfortable even during prolonged use. The ultra-grippy rubber can adjust the nose clip and fit securely no matter how much you sweat. The TR90 is made with Swiss technology and is very durable, flexible and lightweight. Lenses made of TR90 material are very comfortable and of good quality. The ergonomic soft nose pole of the frame design is perfect for all face shapes. The frame can also adjust the height of the glasses and the distance from the face to prevent the glasses from slipping for different outdoor occasions. The versatile sports glasses are ideal for cycling, baseball, golf, driving, running, fishing, skiing, mountaineering and travel activities. Apply on cloudy or snowy covered and sunny days. Do not place your sunglasses next to the flame so that they do not melt. Please do not expose to salt water for a long time or clean water with chemical agents. Do not wipe the lenses directly with your fingers. A cleaning cloth is the best choice for cleaning lenses. Packing 1 x Bicycle Sunglasses