Jafrum Sissy Bar Bag for sale. Made out of black, waterproof PVC. Has one large main velcro strap which secures bag to sissy bar. Also has two tie straps to hold bottom of bag to sissy bar. Tons of room. Big enough to carry a 12-pack or a laptop (and more) if you're heading to work! $20 plus shipping.

Main Bag Dimension:
Length: 14 inches
Height: 12.5 inches
Depth: 7 inches

Side Pocket Dimension:
Length: 5.5 inches
Height: 8.5 inches
Depth: 3 inches

Features
Quick Release Buckles
Rain Flaps
One inside pocket
Two outside pockets