It’s the perfect size for brewing hot coffee, rehydrating soup, or boiling water while out on the trail with a buddy. Osprey Sirrus and Stratos 24-Liter Hiking Packs; $140AmazonOsprey’s packs are designed with trail-tested details to maximize comfort and ease of use. Yeti Rambler 18-Ounce Bottle; $48AmazonNothing beats ice-cold water after a summer hike or a sip of hot tea during a winter walk. It will add weight to your hiker's pack, though—for a lighter-weight, non-insulated option, the tried-and-true Camelbak Chute water bottle is incredibly sturdy and leakproof. Mappinners Greatest 100 Hikes of the National Parks Scratch-Off Poster; $30AmazonThe perfect gift for park baggers in your life (or yourself), this 16-inch-by-20-inch poster features epic hikes like Angel’s Landing in Zion National Park and Half Dome in Yosemite National Park.