The Allpa Adventure Travel Pack is designed to rack up some serious passport stamps. A contoured back panel and padded tuckable hip straps let you comfortably stroll through city streets and train stations. This carry-on compatible pack keeps you dialed on the go with a spacious main compartment and zippered organizational pockets. And a removable 8L sling bag lets you stash essentials when you ditch your pack on short hikes and museum stops—this sling bag is also the perfect in-flight companion..