The 30L Chasm Convertible Duffel Bag from Thule is a versatile duffle bag that converts to a backpack. The water-resistant 900D polyester shell keep your contents protected from the elements, and the 360° zipper opens wide for easy access. The zipper pulls are lockable with a separately available wire lock for additional security. Comfortable straps allow you to convert the duffel to a backpack for long treks. Interior mesh pockets and compression straps keep your gear organized, and the padded bottom provides protection from hard surfaces. Stash your passport or other items in the quick-access pocket. Dual, connecting top grab handles offer comfortable carrying of heavy loads, and the included pouch organizes accessories or contains the duffel for storage.