Oceanweave 600D recycled fishnet polyester with waterproof polyurethane coating; Red interior liner on back-plate protects contents from scratches and improves internal visibility; Daisy-chain webbing for additional tie-down options The Rixen and Kaul lower Slide-Lock rail and Flip-Lock hold panniers firmly in place Rixen & Kaul Vario 1 hooks are adjustable from 6mm-16mm Drawstring closure helps to manage load Mesh side pocket with elastic closure Zippered rear pocket; mesh front pocket with elastic closure Sold as pairs Hook and Strap 2139 c.i. (Pair) Grey/Black XXX-Large (700+ c.i.)