What should I look for in a hiking backpack?

Updated October 2026 · How we answer

Short answerLook for proper fit (torso length and hip belt), the right capacity for your trip length, and features like ventilation, pockets, and durability. The pack should carry the weight on your hips, not your shoulders.

Fit and Sizing

The most important factor is fit. Backpacks are sized by torso length, not height. Measure from your C7 vertebra (the bump at the base of your neck) to the top of your hip bones. Most packs come in small, medium, or large torso sizes, and some are adjustable.

The hip belt should wrap around your hip bones and carry 80% of the weight. The shoulder straps should curve over your shoulders without gaps. A good fit means the pack moves with you and doesn't bounce.

  • Measure torso length, not height.
  • Hip belt should be padded and wrap around hips.
  • Shoulder straps should be comfortable and adjustable.
  • Load lifters (straps near shoulders) help fine-tune fit.
  • Try on with weight in the store.

Capacity and Features

Capacity is measured in liters. For day hikes, 15-30 liters is typical. For overnight trips, 30-50 liters. For multi-day backpacking, 50-80 liters. The right size depends on your gear bulk and trip length.

Look for features that match your needs: a hydration reservoir sleeve, hip belt pockets for snacks, a top lid or side access, and compression straps to stabilize the load. Ventilation is key if you hike in hot, humid climates; trampoline-style back panels offer the most airflow.

  • Day hikes: 15-30L.
  • Overnight: 30-50L.
  • Multi-day: 50-80L.
  • Hydration sleeve and hose port.
  • Hip belt pockets for quick access.
  • Ventilated back panel for hot weather.

Common mistakes

  • Buying a pack based on looks or brand without trying it on with weight.
  • Choosing a pack that's too large, which encourages overpacking.
  • Ignoring torso length and relying only on height—this leads to poor fit and discomfort.
From our shopsTrailGuard: Forest, mountain and campfire cases for the outdoors.