These are unlike non-medical cloth mask you have ever seen. Curve and have a specially designed front that allows you to breath easily and wear them for longer times. Wrinkle resistant front, so they always look great. Adjustable earloops and built in nose bridge for a more comfortable fit. Also has a filter pocket which you can slip in our PM 2.5 - 5 layer filter for added protection. Each mask includes 2 filter inserts. READY IN 3-5 BUSINESS DAYS! Need them sooner, just ask.