Undercover Bass guitar Gig Bag. Under Cover specializes in custom covers and bags, made to our customers' exacting specifications. These first class Double Gig bags are still made in the USA using the best quality textiles and components. The standard fabric is black, 1000-denier Cordura nylon, keep in mind that this ultra-durable fabric is available, through us, in a wide variety of colors, to match any color scheme, or interior decor. Lifetime warranty on Zippers and stitches.