Features 1. Size: for adult 2. Available for 3 layers or 4 layers 3. OEM/ODM/Customization are available The design creates more space between the mask and the mouth, leading some wearers to say they're more comfortable than typical respirators. There are three kinds of masks with different functions- Standard, Smile and Sport. Standard: Ergonomic design first seamlessly around your face line, securing sufficient space for easier breathing and a more comfortable wear.
