Home1 Pack contains 10 filtration sheets. This is to be used together with Greentree Montessori's reusable face mask for children available HERE. Virus Filtration Sheet$3.00PriceOut of StockPRODUCT INFOPrice includes 1 pack of 10 virus filtration sheets. Each sheet is disposable and meant for single use only. RETURN & REFUND POLICYThis item cannot be refunded. COLLECTION INFOThis item can be self-collected at any Greentree Montessori school. For self collection, please bring along your proof of purchase.