For the most extreme environments and the toughest conditions, you need seriously rugged gear. Sea to Summit's Hydraulic Pro Dry Pack is built for hard use. We're talking white water rafting and kayaking trips, or overlanding expeditions by motorbike and 4x4. It's made from ultra-durable 1000D laminated fabric, with pressure-tested zippers and welded seams to ensure it is watertight and airtight, ensuring it can be fully submerged in water without leaking. And unlike most dry bags, the removable and adjustable harness makes portaging and carrying a whole lot easier - whether you're hauling it in and out of a canoe, or on to a Frontrunner roof rack. It carries just like a regular rucksack, but it'll go places that regular bags can't Airtight and fully submersible: Pressure tested waterproof TIZIP MasterSeal and RF-welded seams meet IPX8 submersion rating Ultra-durable 1000D high tenacity double sided TPU-laminated fabric Fully welded seams, airtight waterproof zipper makes this bag fully submersible and nearly indestructible Unique asymmetrical zipper design enables easy access to contents Removable and adjustable shoulder harness allows large load to be carried comfortably or bag to be lashed down for secure transport