Granite Gear Air Zippsack - Assorted Colors The Granite Gear Air Zippsack - Assorted Colors is an ultralight zippered stowage solution. The Air Zippsack comes in several sizes from XXS to M. The Zippsack is made out of 30D Sil Cordura Nylon. The fabric weight is light and the color is almost translucent. It has a waterproof black YKK zipper that runs the center of the length of the top. It has a zipper pull that has a small micro-cord attached. The seams of the sack are fully finished. One end of the sack has a black 9.5 in (24 cm) long grosgrain ribbon, sewed into a loop and inserted into the seam. The Granite Gear Air Zippsack - Assorted Colors is a perfect packing system for clothes and food.