A dry sack bag, is a simple, must have, versatile, stuff and fold down cargo carrier, suitable for canoeing, kayaking, SUP and yachting, indeed any on water adventure, where you need to take with you a grab-bag of goodies. The removal shoulder strap permits you to de-clutter and by rolling down and squeezing the residual air from the inner chamber, you simply clip-lock together to form a tight, compact, vacuum seal around the contents.