BrightLine Bags Flex Side Pocket Charlie (SPC)
Has a really useful pocket compartment as well as three external pen slots.
The Side Pocket Charlie is a pen pocket designed to hold pens and pencils in flight. In addition, it will hold eyeglasses and larger markers in the pocket behind the slots.
NOTE: This side pocket will not mount on the CS2 or CS3 because these modules do not have FLEX Mount Side Pocket Stations. Only the CS4, CS5, and CS11 can accept Side Pockets.