ProV Laundry Hamper Bags... When You Need more protection than standard nylon bags provide. BC Textile Innovations ProV Laundry Bags combine vinyl and nylon to provide and extra level of fluid protection. The bags are rated for 150 processings, making their cost per use the lowest of the bags we offer. Mildew resistant, flame retardant. Made with a straight bottom and dumping loops. These bags are available in 18" (30" x 40") Drawstring closures. Blue. Our bag offers the smoothest closure in the industry, just pull the cord and the easy glide top channel closes with ease. All tops can be made to color code standards. ProV Bags are also available in a Ergonomic Tapered Style. 29x36 tapered to 15" at the bottom.