Peak Design’s large 65-liter Travel Duffelpack is an excellent companion for long-term trips where supplies are a necessity. This durable and waterproof duffel bag features heavy-duty nylon construction along with several unique features. When collapsed, this duffel becomes reasonably small at 45-liters of capacity. It easily expands to 65-liters for extended trips, and it’s versatile enough for any travel excursion. The long and robust #10 zipper is waterproof, and it allows the bag to open wider than many other duffel packs. This leads to excellent visibility and easy zipping when the bag is full. The bag features well-designed shoulder and waist straps to increase long-term carrying comfort. When the bag isn’t being carried like a backpack, the straps stow conveniently out of sight with the help of an innovative magnetic stowing system.