This is a set of 135 three-dimensional non-woven fabric masks with 99% filter performance. Originally a box of 150 masks, 3 bags have been used, leaving 135 masks remaining. 5 masks per bag x 27 bags, all new and unused. - Type: Three-dimensional non-woven fabric mask - Size: Small size (approx. 145mm x approx. 95mm) - Quantity: 135 masks (5 masks x 27 bags) - Filter Performance: BFE99% / PFE99% / VFE99% Thank you for viewing.