Xiaomi cycling anti haze mask

The use of environmentally friendly polyurethane sponge material, 3D split vault
skeleton, the face no sense of support.
Light breathing anti-haze masks, unbridled breathing, not just cool, filtration efficiency
of more than 97% PM2.5, effectively blocking more than 0.3um bacteria.
TPU stretch film composite super fine sponge, the more comfortable the band,
comfortable ear hook design, strong tensile, flexible fit.
Food-grade selection, intimate personal protection, easy to breathe,
even exercise can wear a smooth breathing.
Large-caliber cold flow breathing valve, and said wet bye-bye, large diameter cold flow breathing
valve 40mm in diameter, 0.3mm thin silicone valve, return to natural breathing experience