GET THE MOST OUT OF YOUR BOBLBEE PACK WITH X-CASE EXTRA PACKING SPACE The X-case is the optimal accessory bag to carry chargers, cables, and other extras you need to access quickly. The X-case Medium adds 2l of packing space to your backpack.The case mounts to the lumbar curve of the Boblbee hardshell backpacks. It's well protected and insulated with aluminum foil to keep your lunch or snack fresh while you're on the go. Reflective striping on all sides increases visibility and double parallel zippers allow easy and quick access. The x-case is an all-around excellent accessory pack for your Boblbee pack!Compatible with Boblbee 20L and 25L GT, GTO, GTX as well as previous Peoples Delite and Megalopolis models.   MEASUREMENTS: Size: 8.26 × 4.52 × ∅ 5.11 in21 × 11.5 × ∅13 cm Weight: 5.29 oz / 150 g Volume: 2l / 171 cu.in. Compartments: One, insulated. Closing: Dual linked YKK zippers with handle