Color:B ★ Cold flow breathing valve, effectively eliminates exhaled heat, improves comfort, can't lock the temperature, and can't take off the cool.Function: Respiratory protection in the construction site, factory, coal mine, stone, sanding, etc.Material: silicone, rubberApplicable object: adultLevel protection: KN95Note: If the surface is dirty, or if the respiratory resistance is significantly increased, or if the part is found to be damaged, replace the filter immediately.Note: If the surface is dirty, or if the respiratory resistance is significantly increased, or if the component is found to be damaged, etc., it should be replaced immediately.★Besides this product, the decorative photos displayed on the products are all props, not for sale, please understand.★If you are not satisfied with our products or have other questions, please let us know as soon as possible, we will reply within 24 hours.★ Our product delivery time is 10-20 days. If you do not receive the product within 30 days, please contact us in time.
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