If you’re going to be wearing your backpack for hours a day over several days of hiking, it’s important that the pack is comfortable. A good fit is essential — if the pack sways around or sits too low on your back, it can lead to pain and even spinal problems. A pack that fits correctly should be comfortable when empty, and also when loaded with heavy gear. Look for packs with padding on the shoulder straps and hipbelt, and a suspension system that adjusts to your natural movements while walking, especially when you’re carrying a load. Gregory’s Katmai 55/Kalmia 50 backpack, for example, has a padded torso strap that moves independently of the waist belt and a rotational suspension that automatically aligns with your shoulders and back when you walk. The FreeFloat 360 ventilated back panel keeps you from sweating, and a Polygiene odor treatment reduces the chance that your pack will smell funky.
A backpack’s storage compartments should be easy to access and keep your gear organized. Look for a top-loading backpack with a cinch cord or a roll-top closure that secures the zipper. Side and u-shaped openings on some packs like the Osprey Aether 65 backpack can be a real help, too; they give you access to items in the bottom of your pack without shoveling through a packed bag.
Backpacks are available in a variety of stores, including outdoor specialty shops, big box department stores, and luggage retailers that specialize in backpacking equipment. If possible, shop in person to try on a pack and examine its features before buying. Buying online may offer more options at a lower price, but make sure you check the return policy before making a purchase.