The GoKnit® Zip Bags are made using a patterned ripstop nylon with a zipper closure and are machine washable. The measure 12"x9"x3". You can use the outer loop to secure the bag to a backpack, luggage or chair arm. The bag will stand upright when on flat surface.  Your GoKnit bag will also easily squish to fit into backpacks, totes or luggage to keep your projects close and safe for all your adventures.