From Eagle Creek, the Expanse Convertible 29" Wheeled Backpack Bag features: Looking for a sustainable and versatile bag built to hold everything you need in the most organized way? Travel smarter with the Expanse Convertible 85L/29. It offers zip-away backpack straps and adjustable suspension for when you need to travel hands-free, and wheels so you can roll it when it is convenient. Made with 100% recycled main body fabrics, this bag is as good for you as it is the planet. Front zippered pocket for easy access Interior zippered mesh pocket with key clip Internal adjustable compression Heavy-duty lash points and grab handles External mesh ID pocket Lockable zippers with central lock point Telescoping handle Sternum strap with safety whistle Two heavy-duty wheels with reinforced corners Two carry options: Wheeled and Backpack with zip-away straps Attachment for modular Pack-It integration Specifications (sold separately) External dimensions approx.: 28.75 x 15.75 x 11 in. / 73 x 40 x 28 cm Weight approx. 7 lb. 8 oz. / 4252 g Internal capacity approx. 5187 cu. in. / 85 L This is a calculated volume taken from the product dimensions. Actual dimensions and volume may vary slightly by product due to sewing tolerances throughout the production process. Materials: 100% Recycled 600D Polyester 100% Recycled 450D Polyester 100% Recycled 200D Polyester Imported.