The exterior dimensions of Osprey's Ozone 46L/22" wheeled duffle match the airline's maximum allowable size for carry-on luggage, making this the optimal bag for adventure travelers who prefer airport efficiency. Osprey's HighRose LT Chassis combines a durable ABS plastic back plate with a lightweight aluminum frame to ride on large, sealed bearing wheels for easy rolling, even on rough cobblestones. External and internal compression straps add extra stability when ferrying heavy loads. Open the panel zipper to access the spacious main compartment where a series of carefully designed inner storage pockets line the periphery. Exterior features include a top zippered pocket for quick access to your water bottle and other small items. There's a large front zippered panel pocket and a back pocket with a drain port for damp storage. Low-profile carry handles on top and side provide purchase when you have to hoist the bag up into the back of the bus. Osprey's innovative Handle-It attachment system quickly anchors an Ozone backpack or courier bag (each sold separately) to this bag's ergonomic T-handle, creating a unified rolling luggage package. An internal ID card holder helps reunite you with your gear should it go astray while making a tight connection between Rome and Oslo.