Features:This laser enhancing glasses is mainly used for cross-line, multi-line and rotary laser levels.Enhancing glasses helps to increase the visibility of laser lines or laser points under conditions of 25m long distance and strong light.The length of the frame-arm can be adjusted between 9cm and 11.4cm in four positions. The side and nose part are adjustable and can fit perfectly without sliding, comfortable to wear. Durable construction, soft plastic is lightweight, long time wear without pressure to ensure maximum comfort. Itis big enough to wear on ordinary glasses.Specification:Color: Green, Red (Optional)Material: PlasticWeight: 87g / 3.1oz (approx.)Package list:1 * Glasses1 * Glasses Box