Timbuk2 brings you a unique '3 in 1' messenger case that can be worn messenger style, carried like a briefcase, or like a backpack. It has a wide, messenger strap that fits comfortably over the shoulder with any heavy load but is easily detached and stowed away when carrying it briefcase-style. Backpack straps are tucked away neatly and can be attached when you need to use both arms to carry your load. Over the past 20 years, we've seen Timbuk2 bags outlive jobs, relationships and a few pets. So go ahead, commit - this bag isn't going anywhere.