Arc’teryx Alpha FL 45L Backpack

We’ve read the reviews across the web for the Arc’teryx Alpha FL 45L Backpack and summarize the results below:

Universal Ranking

PeakScore: 77 (out of 100)
User Rating: 4 stars 
Expert Rating: 3.4 stars

Number of Ratings Reviewed: 12

Pros & Cons

Reasons to buy:

User Reviews

  • Waterproof to keep your gear dry inside during prolonged precipitation.
  • The outer material is extremely durable and long-lasting for long-term style and protection from tough terrain.
  • Very comfortable for all-day use while on the trail.
  • The straps contour to your shoulders for an ergonomic and comfortable fit.
  • Lightweight for easy carrying over long distances.

Expert Reviews

  • Simple and very functional for enhanced user-friendliness.
  • Comfortable for carrying medium loads for multiple hours.
  • Durable for long-term use over many seasons.
  • The weight is light for the amount of gear you can carry inside.
  • Works well for those who frequently go alpine hiking or trekking with lightweight gear.

Reasons NOT to buy:

User Reviews

  • Some users wish there were more colors offered for increased personalization.

Expert Reviews

  • The foam suspension pad is non-removable, which reduces the functionality of the pack.
  • You need to be organized and thoughtful while packing the bag to ensure there is enough room for all of your gear.
  • Not the most supportive for carrying heavy loads over long distances.


The Arc’teryx Alpha FL 45L Backpack is a functional, lightweight, and waterproof option that works well for those who enjoy light and fast pursuits. For adventurers who need a protective, durable, and easy-to-use pack, this could be a good choice.


Note: User and expert rankings were reviewed across the web. Some expert reviews include these: 1, 2, 3.