Gregory Z40 Backpack Review

Gregory Z40 Backpack ReviewThe Gregory Z40 Backpack is a pack that lies somewhere in the middle of a daypack and a weekender. It provides you the compact design you want with the capacity to hold all the gear and supplies you will need for your next getaway. The Gregory Z40 is ideal for a shorter duration trip or excursion as well as a minimalist trip that doesn’t require a lot of gear to survive.

When you are looking for any kind of backpack to accompany you on your outdoor adventure, you are looking for durability, comfort, and versatility. You also should always take into consideration the type of activity you will be participating in as well as how long you will be outdoors. All these factors will help you determine which backpack is suitable. Whether it is camping, hiking, cycling, or a day trip, you want to make sure that you can comfortably carry your essentials without putting too much added weight or pressure on your back.

Choosing the Right Style and Size

Gregory has made several innovative and high-quality backpacks for all of our outdoor adventures and never disappoints with their selection. They are one of the top choices when it comes to choosing the right pack for the right outdoor adventure. So, how do you choose which Gregory backpack to purchase?

Pack Capacity is one of the main elements to consider when purchasing your next Gregory backpack. The capacity needs to match with the activity and the amount of gear you will need to have packed. It also comes down to personal preference and whether you want a larger or smaller pack. Choose the backpack that has the capacity to hold what you need for the length of time that your trip consists of so that you remain comfortable, but always prepared.

Next, you want to consider the torso length and the pack size to determine if you will be able to carry the pack when it is full. You want the pack to fit you properly so that it helps to distribute the weight evenly and takes pressure off your back and muscles. Your hips and shoulders will take some of this weight as long as the pack fits properly, comfortably, and efficiently. Do not measure your back for the proper size. Instead, you should always measure your torso length.

The following is a review of the Gregory Z40 Backpack:

Gregory Z40 Backpack

The Gregory Z 40 Backpack is ideal for an overnight trip and includes many features including a waist belt and zippered pockets, and details that you will love and will also provide you with comfort, durability, and security that you need for all of your outdoor adventures.

Gregory Z40 Backpack

Product Dimensions23 x 15 x 7 inches
Product Weight5 pounds
Gear Capacity38 / 40 / 42 Liters
MaterialsPolyester and Nylon Taffeta
Frame MaterialSteel
Frame TypeInternal Frame

Key Features

  • Features Updated CrossFlo Suspension
  • Includes a front U-zip main compartment access panel
  • Includes a dual-density hip belt and shoulder harness
  • Front bucket pocket for additional storage
  • Two external stretch pockets to fit water bottles
  • Ice ax and trekking pole loops
  • Includes an integrated raincover

Available Sizes

There are a few available sizes for the Gregory Z40 Backpack:

Gear Capacity


Gear Capacity






38 Liters2,3182 lb 11 oz.16-1828-36
40 Liters2,4412 lb 14 oz.18-2030-38
42 Liters2,5633 lb 1 oz.20-2232-40

To find the perfect fit for your body type, simply follow the steps below:




The Gregory Z40 Backpack features a ventilated back panel and harness with wrapover padding on the hip belt and waist belt to provide you with maximum comfort on your trip. It also features die-cut foam on the harness that adds breathability and can also help to distribute and reduce the weight.

The CrossFlo DTS Suspension also provides you with adequate airflow across your back without causing interference with the load and weight. The X-Frame helps transfer the additional weight to the lumbar pad and hip belt for improved stability and comfort as well.



The Gregory Z40 Backpack is made from polyester and nylon taffeta material and has added reinforcements included to increase the backpack’s durability and longevity. This backpack also includes an integrated raincover that is in an external access pocket so that it is easily accessible.



The Gregory Z40 Backpack is a large and full-sized backpack that conveniently fits all your gear without the additional weight to carry around. This backpack features a large main compartment, dual zippered hip belt pockets with reinforced straps, a front stuff pocket that is stretched and woven with a mounted quick-release buckle closure, and an external access pocket where the integrated rain cover is located, but also doubles as additional storage in fair weather.

There is an interior sleeve that includes a port and can accommodate a hydration reservoir if you choose to buy one separately. The inclusion of the front bucket pocket, zippered pockets, two exterior stretch pockets, and dual hip belt pockets make it easy and convenient for you to store and organize all of your essentials so that they are easy to recover when you need them.

Pros and Cons

Durable and versatileHip belt pockets are small
Abundant storage optionsToo small for multi-day use
Improved ventilationNon-removable or adjustable top lid
Included raincoverLimited attachment points
Can pack down small when not in useMesh side pockets small and hard to use
Lightweight and compactHigh price point
Easy access to the main compartment
Sturdy aluminum frame
Water bladder compatible
Comfortable suspension

Final Thoughts

If you are planning on a short trip and need more than a standard bag, as you need to comfortably pack your gear and essential to be prepared for any situation, then a Gregory Z40 Backpack is ideal. It is not the largest pack but it provides the user with a sufficient amount of space, allows for organization with stash pockets, strong shoulder straps, and keeps the backpack lightweight and comfortable to wear on any trip.

While it is priced a bit higher than other backpacks on the market, you are getting a high-quality product that will last you for years to come and many adventures. They are durable and versatile and are designed to last and withstand the great outdoors.

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