Mustang Survival’s 30L Bluewater Gear Hauler Meet Mustang Survival’s 30L Bluewater Gear Hauler ($159 USD) – the best dry bag backpack we’ve tested We’ve long been on the lookout for the best dry bag backpack. After five years of living on our boat and bluewater cruising, we’ve “tested” (see: destroyed) half a dozen of them. Each