Wide Range of Applications Can be used in a variety of occasions (1) Sawing Work (2) Demolition Work (3) Grinding Work (4) Wood working (5) Renovation Work (6)Suitable for production in cement factories, ceramics factories, shipyards, metal smelting, power plants, stone processing, polishing, interior design, sawdust, wood processing, graffiti painting, wall art, powder processing, etc. Broad Compatibility The half-cover design provides a wide field of view and is compatible with welding and sanding shields. Ideal for people who wear glasses cover is compatible with all other protective equipment such as eyewear, ear muffs or head protection products. Suitable for ladies and gentlemen for protection during painting and painting work with brush, paint roller and paint gun, paint and paint spraying, and machine sanding airbrush, graffiti, particles and more. Parameter: Material: ABS plastic, Silicone mixture Model: M601 Size: Medium Wearing Method: Headwear Uses: Business or Home Package Included: 1 x Pack Half Face Cover 2 x Filter boxes 2 x Filters Cotton 2 x Plastic Covers When to change the cotton? When to replace filter cotton. 1-3 weeks of use time. If the filter cotton is dirty or wet or you feel increased breathing resistance, replace the filter cotton immediately. When to replace filter boxes. 200 hours of use time. Establish a replacement schedule is a need. After wearing it correctly, it should not smell any harmful smells. If you smell harmful smells, please leave the work area immediately and replace the filter box. Note: The filter cotton and filter box cannot be washing.