Material: microfiber, non-woven fabric and TPE, PM0.3 protection. The mask uses disposable air-filter cartridges, which has an effective particle capture efficiency of up to 98 percent. It can protect users from bacteria, pollen, and particles which are as small as 0.3 micrometers, which means it can achieve PM0.3 filtration.
Just check coupons out (with price alert and history). Let’s see what best price is ATM.
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Price history and price alert
Price history (for all/most countries) for Xiaomi FWMKZ01XY Air Wear PM0.3 Mask is here. The lowest price was: $8.99.
Price records source(s): Gearbest
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You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).