“The World Traveler”. The Pro-Xlc Folds Flat When Not In Use,Or From The Center Into A Compact Nodule. Super Strong When Assembled With Over 400 Sq.Inches Of Hook And Loop Fasteners At The Corners. Great For Tours. Has Been As Far As New Zealand, Tibet And Outer Mongolia With No Reports Of Mishap To Box Or Bike. Shipped Complete. All Parts Replaceable. Will Last For Many Years. 11″ X 30″ X 45.5″(Outer Dimensions) Inner Dims: 11″ X 29.5″ X 44.75