Best 40L Travel & Hiking Backpacks in 2025: The Only Bag You’ll Ever Need
Imagine landing in a new country with just one backpack that works for both the bustling city streets and rugged mountain trails. That’s exactly what a 40L travel & hiking backpack offers — the perfect balance between storage, comfort, and portability . Maelstrom Hydration Hiking Backpack with 2L/3L Water Bladder Whether you’re a digital nomad, weekend hiker, or budget traveler, the right 40L backpack can be your go-to companion for years. In this guide, we’ll break down why 40L is the sweet spot , what features to look for , and the top picks for 2025 . Why 40L Is the Perfect Size for Travelers & Hikers A 40-liter backpack sits in the carry-on size range for most airlines, meaning you can skip baggage fees and waiting at luggage claim. Airline-Friendly: Fits overhead compartments (most models meet IATA carry-on rules). Versatile Capacity: Enough space for 3–5 days of clothes, gear, and essentials. Comfortable to Carry: Not so big that it strains your back on h...