I used this large internal frame backpack / suitcase / detachable
day backpack only once for a four-month round-the-world trip. Besides being large and comfy, it is
multi-functional so that I could use it for everything from a taking a day hike
to stowing on a train to carrying into a fine hotel. It's made by EMS Eastern Mountain Sports and
made of a heavy-duty polyester with a nylon lining. The large backpack can be opened in the back to reveal the padded
shoulder and hip straps. With the back
flap closed and the straps stored, you can carry it as a suitcase with the
padded shoulder or hand strap. Inside is
very roomy, with mesh pockets and a detachable toiletry bag. It also includes a zip-on detachable day hike backpack, which has
padded back and straps as well as inner pocket. This teal blue EMS 5000 Travel luggage package is still in excellent condition and ready for
lots more use. The measurements are
roughly: Large backpack / suitcase measurements: External: 26” w x 15” h x 9”
d Internal: 25” w x x 14” h x 7” d Day pack measurements: 16” h x 11” w x 3.5” d Please reach out to me if you have questions or want to see additional photos since I cannot take returns.