Whether you're going all day in the mountain pines or waking up early for a long desert trek, the Black Diamond Nitro 26L Backpack is ready for adventure. With a decent-sized volume for day trips, this backpack has enough room for warm layers, rain shells, your peanut butter and jelly sandwich, and even a good book. Its ReActiv suspension system includes shoulder straps and a waist belt that move with you on the trail, while OpenAir technology in the back panel, waist belt, and shoulder straps circulate airflow to keep you cool when the desert heats up. The top-access zippered panel opens wide for easy retrieval of snacks or first aid kit, and there are plenty of gear loops for clipping additional items or attaching trekking poles to the back. While the Nitro 26 doesn't come with a reservoir or rain cover, it does include pockets for both, should the occasion arise.