From the early days of ultralight. Classic thru-hiker pack. Medium torso length so it never really fit me. This would be a fantastic travel pack.

"The Mountainsmith Ghost is a lean-and-mean panel-loading single-compartment 3,000 cubic-inch (50 L) internal frame backpack. Features: interior hydration reservoir pocket, two hose ports, two exterior side pockets, a front panel criss-cross bungee cord, and a Delrin rod frame with an HDPE-and-Delrin top assembly supporting the shoulder yoke and load-lifter straps. Weighs 2¼ pounds; the Ghost is suitable for lightweight hikers who prefer a frame and rugged pack fabrics but can do without bells, whistles and compartmentalization"