Waterproof & Sandproof: The MIER dry duffel backpack is made of waterproof 500D tarpaulin material with high-frequency welded seams. Its wide hook-and-loop-secured roll-top opening enables quick access. To seal: simply fold the top down 3-4 times and secure with side clips for a snug, compressed, weatherproof fit. (Note: Do not submerge in water) Multiple Pockets: Featuring a large main compartment, this waterproof duffel provides plenty of room to hold your luggage, boating gear or camping essentials. It includes 1 water-resistant front zipper pocket for easy access to smaller items, 1 internal zipper pocket for storing your valuables, and 2 inner mesh pockets to conveniently organize your gear Multiple Ways to Carry: It features quick-release backpack straps with an adjustable sternum strap for load stability, plus multiple lash points to secure it to your kayak, motorcycle, or roof rack. It also includes an adjustable/detachable shoulder strap and 4 soft side haul handles, effortlessly adapting to any carrying style you need Large Capacity: Boasting a massive 80L capacity at just 4.3 lbs, this bag is built to accommodate all your essentials. The dynamic height design (24.5"L x 15"W x 15"-22.75"H) lets you effortlessly expand or compress the space to match your gear loadout. Stand out and express yourself with multiple vibrant color options! Multi-Use: The MIER waterproof dry bag is not only perfect for outdoor adventures like hiking, cycling, motorcycling, and climbing, but also excels in water activities like boating, floating, canoeing, rafting, kayaking, surfing, swimming, and beach vacations. It makes a practical and thoughtful gift for family and friends! Gear up for your next great adventure with the MIER 80L Waterproof Dry Duffel Backpack. Whether you are battling river rapids, riding your motorcycle cross-country, or camping in the wet backcountry, this versatile dry bag is engineered to keep your gear completely dry, secure, and perfectly organized. 100% Waterproof & Sandproof Constructed from heavy-duty 500D tarpaulin with high-frequency welded seams, this waterproof duffel stands up to the harshest elements. The wide hook-and-loop secured roll-top opening allows for quick loading. To lock out water, simply fold the top down 3-4 times and snap the side clips to create a snug, compressed, weather-tight seal against rain, snow, sand, and mud. Massive 80L Capacity & Smart Organization Don't let the ultra-light 4.3 lbs weight fool you—this bag holds a massive 80L of gear. The dynamic height design (24.5"L x 15"W x 15"-22.75"H) allows you to effortlessly expand or compress the volume to match your specific gear loadout. It includes a spacious main compartment for bulky boating gear or camping essentials, 1 water-resistant front zipper pocket for quick-grab items, 1 internal zipper pocket to safely store valuables, and 2 inner mesh pockets for smaller accessories. Versatile 4-in-1 Carrying & Mounting Use the quick-release backpack straps with an adjustable sternum strap for comfortable, load-stable hiking. Switch to the removable shoulder strap for cross-body carry, or use the 4 soft side haul handles to effortlessly grab and lift the bag from any angle. Planning a road trip or water expedition? The built-in lash points make it incredibly easy to secure the bag tightly to a motorcycle tail, kayak, boat deck, or car roof rack. Built for Multi-Use Adventures MIER roll-top dry bag excels in watersports like kayaking, boating, rafting, and surfing, as well as land excursions like motorcycling, cycling, and beach vacations. Make it your go-to travel companion or gift it to the outdoor enthusiast in your life!