The filter element of the mask has 5 layer protection, bring you a safe breathing experience 5 pm2.5, dust and other fine particles
Prevent second-hand smoke and automobile exhaust.
The filter cannot be cleaned.
Recommend changing mask filter every 1-2 weeks.
Specifications: Pm2.5 Weight: 25-50g Size: 12.5 * 8 * 1
Package includes: 10 pieces
*Orders will be arriving in 3 weeks