Technical DetailsNominal Thickness 170 micronsNominal Base Weight 50 g/m2Break Strength Machine Direction 5.0Break Strength Cross Machine Direction 3.0Stiffness Machine Direction 7.5Stiffness Cross Machine Direction 3.0Bulk Density 0.31 g/cm3Air Permeability (Gurley) Through Plane 35Air Permeability (Gurley) In Plane 295Compressibility (%) 11.5 (22N – 113N)/22 x 100%Thru-Plane Resistivity 6.7 mOhm*cm2Wet Proofing 5%, 10%, 20%, 30%, 50% Wet Proofing