A 69 quart portable dry storage bag — the largest in the range.

A dry bag is the answer to gear stored where weather gets at it — an open bed, a roof rack, a trailer. IPX6 rated, so it keeps out driving rain and dust rather than just a light shower.

Rugged nylon straps with ballistic buckles, an air release valve so you can compress it down once it is packed, and an integrated pouch for the small personal items that otherwise get lost in the bottom.

Worth knowing: the 69 quart and the 58 quart are the same price. If you are choosing between them and the space is available, there is no reason to take the smaller one.