Relaxing in camp is nice, but you're burning daylight and the Marmot Kontract 16 Hydration Backpack is rearing to tag that peak at the top of the drainage. Being the biggest offering in Marmot's Kontract line, the Kontract 16 has almost 2,000 cubic inches of storage space and weighs just over 12oz. The pack comes with a hydration reservoir, so you can stay properly hydrated on your way to the top, and it has more than enough room for everything you'd need for full day hike or final summit ascent. A zippered lid pocket keeps your topo map close, and an additional external stash pocket ensures your headlamp is on deck. Reflective details make you visible in low light situations, and a highly compressible design lets you cinch the pack down when you're hiking light.