outer layer: 100% polyethylene, SPUNBOND surgical non-woven fabric.
filtration layer: 100% polyethylene, MELTBLOWN surgical non-woven fabric
inner layer: 100% polyethylene, SPUNBOND surgical nonwoven fabric.
Tie strap: 100% polypropylene.
Measurements: 17.5cm x 9.5cm x +/- 2mm
ultrasonically sealed