North Face Hiking Backpack - W Crestone 60 Internal Frame 。Crestone 60 Backpack - Women\'s Size S/M 60 Liter Opti Fit system adjusts to individual torso lengths to give you a truly custom fit E-VAP back panel features supportive, breathable foam and lets cool air flow to your back Shoulder straps are shorter and softer to provide a more comfortable, non-chafing fit for the female body Dual-pivot hip-belt moves with you and distributes the load over rocky, mountainous terrain Extendable top lid and collar allow 500cu in (10L) of extra space for longer or gear-heavy trips Hypalon reinforced areas extend the life of the pack for a few hundred miles of rough trail Compression straps and side loops can hold extra gear or skis for overnight tours