Goldline display sleeves polypropylene reinforced 150 micron 9 hole a1 clear pack 10 product description goldline display sleeves polypropylene reinforced 150 micron 9 hole a1 clear pack 10 quality glass clear design 150 micron polypropylene pockets heavy gauge acid free black paper reinforced punched holes for extra strength anti static to keep work safe nine holes size a1 packed 10 features quality glass clear design 150 micron polypropylene pockets heavy gauge acid free black p