Feature(may vary by option.)

●350 type with exhaust valve
●Prevents stuffiness in the mask caused by exhalation and allows for easy breathing
●Contents: 10 sheets
●Particle repair efficiency: more than 95.0% (average 97.9%)
●Weight: Less than 0.5 oz (14.1 g) (average 0.4 oz (11.1 g)

[Single Item]

Description

Features:
3D face cushion that keeps you dry even with a disposable dustproof mask.
Exhalation exhaust valve. Does not get stuffy. The tightening cord can be adjusted while the mask is attached.
Designed for the size and shape of Japanese faces
Performance: DS2 National Certification Passed No. TM340
Particle repair efficiency: more than 95.0% (average 97.9%)
Intake Resistance: Less than 50 Pa (average 37 Pa)
Exhaust resistance: Less than 36 Pa (average 21 Pa)
Weight: Less than 0.5 oz (14.1 g) (average 0.4 oz (11.1 g)
Usage Limit Time: 15 hours
Package unit: 10 pieces
Shime: Double string.