Our collection of 35L to 40L Ultralight packs are designed to cover a broad range on and off-trail excursions, streamlined multi-day trips and thru hikes, and winter ski and climbing activities. With options across the Junction, Southwest, the Windrider, Porter, Prism, Ice Pack, Unbound, Waypoint, Contour, and Crux models, features range from complete simplicity and essentialism, to more technical, pursuit-specific designs.