Features: 1. One size: One size fits most and edge seams adopted lock edge will not unravel easily, not too tight or too loose, keep your nose and mouth clean. 2. High quality material: The product is made of high quality plastic, it doesn't contain heavy metal, harmful substances and is safe to use. 3. Comprehensive protection: it is enough to protect nose, mouth and face, perfect dust-proof, smoke-proof, wind-proof, to bring you a safe breathing experience. Description: It can be used in commuting, school, gardening, short distance travel, driving, sports and outdoor and other occasions, daily use. Specifications: Size: 161x150mm Material: plastic Color: transparent Package Included: 1/2* Protective shield (OPP bag) Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.