Part of our eco-friendly Bally Peak Outlook capsule collection, where 100% of net proceeds will benefit future mountain conservation projects, this face mask in size small is made in collaboration with Airinum® and features a five-layer construction to provide superior filter protection against different particle types and sizes; an outside PP layer, active carbon to filter gases and odors, two electro charged layers to filter bacteria, dent, pollen and other allegens, and an internal PP layer with a smooth and skin-friendly finish. Comfort is built into the design with memory foam nose padding, adjentable ear and head straps and two exhalation valves which reduce moisture and make the mask easier to breathe through. The external fabric can be washed and reened to reduce waste. The mask is tested and certified for standards that are similar to the American N95 (Test: GB2626 & Certification: KN95) and includes a zipped pouch and two replaceable filters, each lasting 100 hours. Please note that this mask is not a medical device. For sizing, please see the product detail section. Each order in the Bally Peak Outlook capsule is packed in an exclenive roll-top bag made from 100% recycled polypropylene.