The most unique feature of Dura Flock nitrile gloves from Microflex is the flock-lining, which is a fine layer of cotton on the inside of the gloves. By absorbing moisture, the flock-lining keeps hands dry inside the glove, improving the grip. Made from nitrile, a latex-free alternative, Dura Flock gloves are the thickest gloves available from Microflex at 8 mil.