The first of its kind in wearable air filtration. The medical grade silicone material is recyclable, soft and flexible. Environmentally friendly silicone has no BPA unlike PET plastics. Good for your skin and provides an air tight seal, to keep pathogens, dust and pollution out. The SEEUS95 Light Warrior Mask comes with four N95 Bio-Filters, made from a hybrid of bamboo, silk and PLA (poly lactic acid)fibers. Comes with 4 replaceable filters and a SEEUS95 canvas tote carry bag.