This is the Medium Stuff Sack as shown in the first photo.  Great for a Heavy Duty plus camera.  Its nice to be able to keep your kit assembled and in one place ready to go.  A stuff sack is also handy at the field to stow your setup and keep it clean. This stuff sack is the same material as a microfiber wipe, but thicker, good to clean a lens. This is a nice bag.
 
Color - Black 
Size - 6 inches wide x 10 inches tall
Material - Thick Nylon Microfiber - Double stitch seams