External Dimensions:5¼ W x 1½ D x 8½ H  (13 x 4 x 22 cm)Weight: 7 oz. (198 g)

Tamrac photo backpacks are made from water-proofed materials and have giant rain flaps, so in general, they don't require a raincover. When extra security is desired, these M.A.S.™ Raincovers provide it with a double waterproof-coated PowerGrid™ nylon that protects everything except the back of the backpack and the harness. Folded in their pouch, they attach to any of the M.A.S.™ backpack attachment points.
For photo backpack Models 757, 767, 777, 5256, 5259, 5375, 5575 and 5577
Color: Gray with black case