FEATURES
• Design of double(Single) Filter pot and breather valve.it is extremely low to breather obstruction.• Enclose and present a soft nose cushion with cotton which can suck.• The built-in high-efficient filter cotton can soundly filter the fine dust,economic and substantial.• Sweat, increase comfortableness of wearing, able to wash and change• Nontoxic odorless, sensitivity and non-iritating to skin
SPECIFICATIONS
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