The Hydraulic Pro Dry Pack from Sea to Summit is a robust, durable, and waterproof duffle-style pack that can also be worn as a backpack. The detachable Hydraulic carrying system is made of EVA foam covered with Airmesh fabric and is adjustable in length. It is secured to the Dry Pack using aluminum buckles. The seams are welded together, ensuring that no water can penetrate from the outside. The outer material is made of PVC-free, sturdy Hydraulic fabric that is coated on both sides with polyurethane, making it waterproof, abrasion-resistant, and pressure-resistant. Additionally, it is UV-stabilized and remains break-resistant even in extreme cold, ensuring long-lasting enjoyment of the Dry Pack. The oval bottom prevents the pack from rolling over when standing and makes it easier to store, stack, or pack. Whether for canyoneering, expeditions, or boat trips, the Hydraulic Pro Dry Pack is ready to handle all your adventures with ease!.