Check the listing for details. Singing Rock Expedition Duffel 70L Durable Laminate Travel Backpack for. Condition: New with tags. Listed at 197.24 USD. It's not your average duffel bag... Made from a durable laminate material, the EXPEDITION DUFFEL is an almost indestructible bag. Resilient enough to be roughed up in-flight, or to be transported up a mountain via a yak or off-road vehicle, this is one burly duffel bag.Alpine-cut shoulder straps. Alpine-cut shoulder straps. Dual daisy chains. Dual daisy chains. Twin haul handles on the sides. Twin haul handles on the sides. Rugged construction with double stitching. Rugged construction with double stitching. Four compression straps. Four compression straps. Internal mesh pockets & pocket on top. Internal mesh pockets & pocket on top. Weight: 1820 grams (70 liters), 2270 grams (90 liters). Weight: 1820 grams (70 liters), 2270 grams (90 liters).