High Quality / Durable / Practical - Our special 5-layer activated carbon filter can effectively filter PM2.5 germs, allergens, haze, dust and other fine particles. Packages come with 20 filters each. They can be inserted into our face masks and depending on use last up to a week.

• Made of high quality material: non-woven fabric, activated carbon and advanced filter cotton
• Durable and practical to use. They fit in to most adult masks that contains a filter slot
• Disposable - The filter is disposable. It is recommended to replace it and the recommended use time is 3-5 days.