Three-layer fabric construction features a middle layer of microporous film that allows heat and sweat vapor to escape while protecting against dry particulates and liquid. Passes ASTM F1670/1671 testing for penetration of blood, body fluids and blood-borne pathogens. Patented REFLEX* Design is 7-1/2 times less likely to rip out than ANSI minimums — provides 12% more chest room and 6% longer body length.