Explore hands-free. Wear Allpa X around your hip or crossbody, and store it in your Allpa Travel Pack’s top pocket. When you’re in the air, take it out of your Allpa for an in-flight buddy pack. Butterfly-style opening for easy access. Side release buckles for compression. Main compartment two-way zipper. Wings can be stowed in the back panel when traveling for easier packing. Rounded corners and darts give the front pocket more volume for packing. Fits perfectly inside top pocket of Allpa 35L and 42L. TPU-coated 1000D polyester. 840D ballistic nylon paneling. 4L (244cu in). 11 x 8 x 3.5in (28 x 20 x 9cm). 13oz (368g).