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About Gregory Z40 Backpack - Internal Frame

Closeouts. Thoughtfully designed and impressively supportive, the Gregory Z40 backpack performs during big days out and is suitable for ultralight overnights. The updated CrossFlo suspension handles heavy loads comfortably, and a front panel zipper offers easy access to your gear.


Specs about Gregory Z40 Backpack - Internal Frame

  • Pack material: Polyester and nylon
  • Frame type: Internal
  • Frame material: Spring steel, high-density polyethylene (HDPE)
  • Hydration compatible: Yes
  • Pack loading: Top and front
  • Ice tool/trekking pole loops: Yes
  • Rain cover: Yes
  • Recommended use: Backpacking Day or Overnight
  • Volume liters: 38, 40, 42
  • S:
  • Dimensions: 21x10x9"
  • Pack capacity: 2318
  • Weight: 2 lb. 11 oz.
  • Fits torsos: 16-18"
  • M:
  • Dimensions: 23x10x9"
  • Pack capacity: 2440
  • Weight: 2 lb. 14 oz.
  • Fits torsos: 18-20"
  • L:
  • Dimensions: 25x10x9"
  • Pack capacity: 2562
  • Weight: 3 lb. 1 oz.
  • Fits torsos: 20-22"
  • Made in China
  • Visit our Backpack Guide
  • Cannot ship to China
  • Cannot ship to Japan.
  • Cannot ship to South Korea.


Gregory Z40 Backpack - Internal Frame Fit Guide

Size S M L
Torso Length (in) 16 - 18 18 - 20 20 - 22
Torso Length (cm) 40 - 44 45 - 49 50 - 54
Pack Weight 2lb. 11oz 2lb. 14oz. 3lb. 1oz.
Pack Capacity ( 2318 2440 2562
Pack Dimensions (in) 21x10x9 23x10x9 25x10x9

Note: Using a flexible tape measure or Gregory Fit-O-Matic, measure the length of your torso from the C7 vertebra (at the base of your neck) to the spot on the spine level with the top of the boney hip structure called the iliac crest. Do it two or three times to get an accurate measurment. If you are between frame sizes, always go with the smaller size.


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5.000000 5 Overall Rating: 5 Based on 3 reviews

Most Helpful 5-Star Review

Verified Buyer Reviewed by shadow from china on Sunday, March 26, 2017
The packbag is very good as picture,I do really like it
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About Gregory

After designing his first backpack as a Boy Scout at the age of 14, Wayne Gregory dedicated his career to making outstanding gear, a mission that eventually led him to create Gregory Mountain Products in 1977. From the beginning, Gregory backpacks have been engineered using a combination of field research and customer feedback in order to enhance durability, fit and function. The brand has pioneered many industry firsts, such as multiple pack sizes with different frame, harness and waist belt dimensions. They also developed the first waist belt system that offered a variety of hip angles. Not surprisingly, Gregory backpacks have been praised in a wide range of publications, from Backpacker magazine to National Geographic Adventure.