Maxpedition Janus Extension Pocket by Maxpedition Fabric/Nylon Imported We finish our bags with a triple coat of polyurethane for water resistance and add a final coat of DuPont Teflon Fabric Protector to repel the elements; Only the best components and designs are used We use complete YKK zippers and slides exclusively unlike our competitors who put YKK slides on generic zippers We add military grade nylon Webbing for straps, handles, and modular attachment points; Genuine Duraflex buckles and hardware add strength and functionality