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Quick Take
The Gen 4 introduces a new Response A3 suspension system that automatically adjusts to the wearer's gait, reducing hip fatigue on long days with heavy loads.
What's New
The defining feature is the new Response A3 suspension system, which uses a three-axis pivot point to automatically adjust to the wearer's gait and terrain.
Key Features
- Response A3 suspension auto-adjusts to gait and terrain
- 23% reduction in hip fatigue vs Gen 3 on 40+ lb loads
- Carries loads up to 70 lbs comfortably
- Full-access rear zip for easy packing
- Integrated rain cover
- Available in men's and women's fits
Best For
- Multi-day backpackers who need organized carry for technical terrain
- Hikers who want a structured pack that moves well on steep routes
- Travelers who need to carry a full kit without sacrificing mobility
Not Ideal For
- Shoppers on a tight budget — this is a premium-tier product
- Ultralight-focused travelers counting every ounce
Price & Availability
Available now at gregorypacks.com and REI
Specifications
Volume75 L
Weight5 lbs 6 oz (2.44 kg)
SuspensionResponse A3 auto-fit
Max Load70 lbs
Back PanelFull-access rear zip
Rain CoverIntegrated
MSRP$399
This article is based on official press release materials from Outdoor Sportswire. View original press release