What Are Backpack Sizes & Volumes: Your Ultimate Guide to Choosing

Backpack shopping often feels like deciphering a foreign language. Liters. Cubic inches. Roll-top expansions. Do you really need a 65 L pack for a weekend getaway? Or will 20 L suffice for your daily commute? Understanding how brands measure capacity—and matching that to your body, your gear list, and your itinerary—can make the difference between a flawless trip and a back-breaking saga.