The EXP Series Saguaro Dry Bag is the center of our Saguaro Seat Bag system. It's removable from the Holster (sold separately) for easy packing or bringing your valuables with you at rest stops. Waterproof materials and construction keep contents dry, and a purge valve lets you squeeze every last liter of capacity out of these bikepacking dry bags. Available in two sizes for all your adventures. Note: Includes dry bag only. Images of full seatbag system are for illustrative purposes. 210D nylon waterproof material Welded construction Specifications Color Black Waterproof Yes Defined Color Black Primary Material 210D Nylon