Here's some of the cutting edge features of this face mask:

• ✅ Nano Technology Dust-Free Air Filter PM2.5
• ✅ Made with high quality polyurthane that's breathable and comfortable.
• ✅ Most Comfortable in it's class - can barely notice you're even wearing it.
• ✅ Washable - use repeatedly.
• ✅ Elastic widening ear strap design that's strong and comfortable
• ✅ Fits all ages, perfect for men, women, and children
• ✅ Redesigned breathing valve that reduces heat and humidity (make it much more comfortable)
• ✅ Collapsable - put it in your pocket and take it anywhere
• ✅ Extremely Lightweight & Ultra Thin (2mm)