Minimalist 30 liter Cuben Fiber packHyperlite optimized this minimalist day backpack for passionate alpinists, backpackers, thru hikers and other goal-oriented adventurers. Take the 30-liter Summit Pack on your El Cap Nose-in-a-day ascent, the sub 24-hour Grand Teton summit attempt or anytime youre pushing the super ultralight fastpacking limits. Combining the minimalist elements of Hyperlite's urban Metro Pack with the functional basic daisy chains and optional Stuff Pocket of their 4400 Porter pack, the Summit securely holds enough water, food, extra gear and clothing for your big day. And its streamlined so nothing gets in the way while you are en route. Bring it on your bigger adventures; its light and easy to stuff into a larger pack. Or just use this sweet rig for cycling, walking or commuting to work. Made with 100% waterproof Dyneema Composite Fabrics (formerly Cuben Fiber), the Summit is also highly water resistant. Get it in indestructible, fully woven Dyneema if you want it to last forever.