The 109HPI style hairnet is 100 percent nylon honeycomb with 1/16″ hole aperture. Keystone Safety apparel is designed to be your favorite defense against contamination while remaining comfortable to wear. Our high quality materials conform to the most rigorous and documented test standards and undergo independent quality testing to ensure constant performance. Each lot is inspected for size, material, and workmanship. Clean room compatible. Heavy weight, strong/durable and non-linting. Flame-resistant. Case include 10 boxes, 100 each.