description: Fold the mask into three layers to form a three-dimensional breathing space. It has a hidden nose plastic bridge to prevent fogging, and a hidden nose cartilage bridge to avoid gaps and reduce the inhalation of harmful substances through adjustment. High elastic ear hook, low pressure. feature: Safe, breathable and hypoallergenic; and high filtration capacity. Elastic ear hook, no ear pressure. Provide some protective measures to prevent dust or certain toxic substances. Clean and practical, very suitable for carpentry, house cleaning and general maintenance. They are made of non-woven materials and have good skin tolerance and wearing comfort. There is no glass fiber. A great choice for you or your family. One size fits best. 100PCS KN95 specifications: Material: non-woven fabric Quantity: 100 Protection level: KN95 Filtration rate: ≥95% (0.075μm particles) Packing size: about 10 * 8 * 2 cm / 3.9 * 3.1 * 0.8 inches Package weight: about 600 grams packing list: 10/50/100 * KN95 mask