The Gregory Alpaca 80L Duffel Bag is highly abrasion-resistant and weather-resistant thanks to its durable 900-denier fabric and TPU coating. We like the versatile carrying options with the removable shoulder strap and padded backpack straps letting us carry the duffel over our shoulder across our back or on our back. The daisy chain loops make it easy to secure the bag to a jeep penny cab pack animal or trailer or to attach additional gear outside of the pack that doesn't fit within its generous 80-liter interior.