Simple and durable. Made from recycled woven fabric, added ripstop, and simple hook closure, this thing can get blasted, scraped and abused without problems. This Downtube roll is intended to be cage mounted with Vole Straps, making for easy remove and tool access during major mechanical issues. Its waterproof material and taped seams keeps moisture out even during intense rains and year around exposure……no more rusted parts and pieces in your took kit.