Disposable Microporous Sleeves Color White Material Microporous Fabric Latex-Free Yes Overall Length 18 in Package Quantity 200 Packaging Bulk Seam Style Serged Series MicroGuard MP(R) Sleeves Primary Material Microporous Fabric Standards ASTM 1670-07 ASTM D2261-1996 ASTM F 2299 ASTM F903 GB/T 12074-1991 GB/T 3923.1-1997 GB/T 4744-1997 GB/T 5455-1997 Thickness 1.6 mm Gas Tight Yes Liquid Tight Yes Pathogen Chemical Ratings Meets ASTM 1670-07 Meets ASTM F903