The Panga® Backpack is an airtight citadel merging the durability of the Panga Duffel with a tried-and-true backpack design. Its ergonomic Dry Haul™ Shoulder Straps offer extra carrying comfort, while the removable chest straps and waist belt provide added stability and security while you trek. And no need to carry it over your head while you wade or blink an eye if left out in the rain, because it's a 100% waterproof gear fortress equipped to outperform any other backpack out there. Features. • Hydrolok™ Zipper: Makes sure water stays out so your gear stays bone-dry, no matter how torrential it gets. • U-Dock™: The terminal end of your Hydro Lok Zipper that ensures a completely airtight seal. • Thickskin™ Shell: Our Thick Skin Shell is made of high-density nylon and thick TPU lamination to be puncture-and abrasion-resistant. • Metallock™ Hardware: Tough-as-nails, simple-as-rocks.