This BACKPACK version of the #4 is perfect for trips ranging from 5 to 10 days. It’s the original BAD BAG DUFFEL—our standard for over 30 years! The size is perfect for carrying everything you need for those extended journeys, without weighing you down. With durable materials and construction that’s been tested in the field for over three decades, you’ll be able to use this duffel bag on adventures and expeditions for years to come. The backpack duffel straps offers another carry option and, keeps hands free.  Proudly made in Seattle, U.S.A.