Our 50 gram terry microfiber cleaning cloth is a heavy weight 16 x 16 cloth made of the highest 70/30 blend of polyester/polyamide(nylon). This is not a cheap store bought microfiber cloth that will only last a couple of washes. Superior absorbency and durability it will last up to 300 washes when treated properly. Will not scratch, streak or lint. Color code to prevent cross contamination.