Designed as the perfect speedy and compact carry solution for frequent travelers, Aer's Flight Pack 2 is perhaps the ultimate bag in regards to versatility and agility. It boasts multiple carry styles - including briefcase, backpack, and atop your wheeled luggage - and functions beautifully on its own or alongside other bags. It also boasts an ultra-durable 900D eco-dyed polyester exterior, hideaway straps, lockable YKK zippers, a 21L volume, and plenty of internal- and external-access organization (including a 15.6" laptop pocket). Truly, this may be the best speed-focused travel bag ever built.