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PureMSK combines thoughtful design while maintaining superior comfort and filtering efficiency even after 24 hours of use. PureMSK masks are the ideal solution no matter where you go or what you’re doing, especially when social distancing is simply not possible: traveling on the subway, bus, train or plane, watching a sporting event or concert, visiting a museum, or otherwise in a crowded space. PureMSK brings together world class nanofiber technology with American manufacturing and thoughtful design to create the only mask comfortable enough to wear all day long.