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How big are backpacks?

4 packing your backpack efficiently for air travel

Backpacks come in a variety of sizes, and the ideal size really depends on what you need it for! Let’s break it down based on common categories of backpacks and their typical dimensions. That way, you’ll know exactly what size works best for your specific needs:

1. Small Backpacks (10-20 Liters)

These are usually compact and lightweight, perfect for day trips, short commutes, or as an accessory to carry a few essentials. They can hold a tablet, small personal items, a jacket, and maybe a snack or two. These backpacks are ideal for:

  • Day hikes
  • Casual outings
  • School use (if you’re carrying just a few books or a laptop)

Typical Dimensions:

  • Height: 14-18 inches (35-45 cm)
  • Width: 9-12 inches (23-30 cm)
  • Depth: 5-7 inches (13-18 cm)
2. Medium Backpacks (20-35 Liters)

These are great for more versatile use. Whether it’s a backpack for school, travel, or light hiking, this size offers more space without being too bulky. You can comfortably fit your laptop, books, water bottle, jacket, and even some gym clothes.

Typical Dimensions:

  • Height: 17-20 inches (43-51 cm)
  • Width: 12-14 inches (30-36 cm)
  • Depth: 7-10 inches (18-25 cm)
3. Large Backpacks (35-50 Liters)

If you’re packing for longer trips, traveling, or need a larger bag for work and leisure, large backpacks are the way to go. They can accommodate extra gear, clothes, or even overnight essentials. These are commonly used for:

  • Weekend trips
  • Hiking and camping (with additional gear like tents or sleeping bags)
  • Students carrying laptops and larger textbooks

Typical Dimensions:

  • Height: 19-22 inches (48-56 cm)
  • Width: 14-16 inches (36-41 cm)
  • Depth: 9-12 inches (23-30 cm)
4. Extra Large Backpacks (50+ Liters)

For serious travelers, long hikes, or multi-day camping trips, extra-large backpacks offer ample space for everything you need. These backpacks can handle everything from clothes to tents, sleeping bags, and even some gear for extended travel. You’ll find this size in trekking, mountaineering, or travel backpacks.

Typical Dimensions:

  • Height: 22-30 inches (56-76 cm)
  • Width: 15-20 inches (38-51 cm)
  • Depth: 10-15 inches (25-38 cm)
5. Specialized Backpacks (Varied Liters)

Some backpacks are designed for specific activities, and their size will vary based on the activity:

  • Laptop Backpacks: Usually around 15-25 liters, offering space for a laptop, charger, and a few other items.
  • Hydration Backpacks: Typically smaller (10-20 liters), designed for outdoor activities like running, biking, or hiking, and equipped with a water reservoir.
  • Diaper Backpacks: Usually between 20-30 liters, designed to carry everything parents need for their babies, from diapers to snacks.
How to Choose the Right Size for You:

When deciding on the size, think about what you’ll be using the backpack for. If you’re commuting or running errands, a small or medium sized bag is perfect. But if you need to carry more, like clothes for an overnight trip or hiking gear, you’ll want a larger bag.

Pro Tip: When looking at backpack sizes, keep in mind that the volume (in liters) is a rough estimate of how much the bag can carry. Check the internal compartments as well, because a well-organized backpack with multiple pockets may hold more than one with fewer compartments, even if they’re the same size.

If you’re unsure, we can always guide you to find the perfect size based on your needs. Feel free to reach out to us!

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