3Q N95 masks are CDC approved as well as NIOSH approved. These are available for immediate shipment and are recommended for those in medical settings. These masks have all certifications met and can be seen on CDC website. Each order contains 5 pieces and includes shipping and handling. Mask fit courses with the N95 option will be using this mask. Our headquarters is in Vancouver BC Canada and all orders will be dispatched from there. While there are limited quantities available, it is strongly recommended that orders be placed in a timely fashion as we will be processing orders on a first come first serve basis. International shipping is available upon request and our toll free number is available seven days a week. High volume orders are available and welcome. These masks will be available for sale as long as inventory levels are sufficiently stocked.