A 42 quart portable dry storage bag.

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.

42 quarts is the compact size — a change of clothes and bedding for one, or the gear you want kept dry while everything else takes the weather.