Manufacturer: KOKEN LTD.

If you prioritize fit capability:

Hi-Luck Series by Sakai
The Hi-Luck series is designed with a three-dimensional FF Lip (Free Fit Lip) structure that enhances fitting capabilities.
Masks equipped with the FF Lip provide high airtightness and easily adapt to facial movements, delivering a natural, secure fit.

• Excellent skin contact feel and superior moisture absorption.
• Easy to don and reduces skin irritation due to the use of urethane rubber material.
• Fit can be adjusted while wearing the mask.
• Convenient folding function for easy carrying (excluding Hi-Luck 550/555 models).
• Prevents internal condensation and features an anti-fog filter design.

To protect the environment, no metal components are used, ensuring safe disposal via incineration.

Hi-Luck Series

Product Name / Image			Hi-Luck 350 DS2 N95 Hi-Luck 350T DS2	Hi-Luck 355 DS2 Hi-Luck 355T DS2	Hi-Luck 650 DS2 Hi-Luck 650T DS2	Hi-Luck 550 DS1
			Assigned Protection Factor: 10	Assigned Protection Factor: 10	Assigned Protection Factor: 10	Deodorizing Type Assigned Protection Factor: 4
Features / Certification Code			National Certification No. TM339 / TM609 ※Image shows Hi-Luck 350	With Exhalation Valve National Certification No. TM340 / TM628	Uses Bipro-Micron Filter (Also available as 655/655T with valve) National Certification No. TM597	Removes trace organic odors simultaneously with dust (Also available as 555 with valve) National Certification No. TM383
Performance	Particle Collection Efficiency (NaCl Particles)		95.0% or higher (98.4%)	95.0% or higher (97.9%)	95.0% or higher (99.4%)	80.0% or higher (88.2%)
	Inhalation Resistance		50Pa or less (35Pa)	50Pa or less (37Pa)	50Pa or less (36Pa)	40Pa or less (29Pa)
	Exhalation Resistance		50Pa or less (35Pa)	36Pa or less (21Pa)	50Pa or less (36Pa)	40Pa or less (28Pa)
	Resistance Increase Value		—— (135Pa)	—— (203Pa)	—— (90Pa)	—— (91Pa)
	CO2 Concentration Increase / Dead Space Volume		1.0% or less / 400cm3 or less (0.45% / 178cm3)	1.0% or less / 400cm3 or less (0.41% / 165cm3)	1.0% or less / 400cm3 or less (0.37% / 149cm3)	1.0% or less / 400cm3 or less (0.73% / 293cm3)
	Wet Resistance Value		—— (31Pa)	—— (22Pa)	—— (30Pa)	—— (23Pa)
	Weight	Standard	350: 12.1g or less (9.1g)	355: 14.1g or less (11.1g)	650: 12.6g or less (9.9g)	550: 12.3g or less (9.8g)
		Hook Type (T)	350T: 12.7g or less (9.7g)	355T: 14.5g or less (11.5g)	650T: 13.1g or less (10.2g)	——
	Maximum Use Time Limit		13 hours	15 hours	20 hours	12 hours

* Values in parentheses ( ) represent the measured average values.