You are using a web browser we don't support. Please use the latest version of one of these browsers.

Mozilla Firefox

Google Chrome

Apple Safari

Microsoft IE

Back to top
Mistral Blue
Mistral Blue

This product is no longer available, but don't go just yet.


  • Interior organization and clean exterior lines allow it to function as a commuting or carry-on pack during the work week
  • BioSync suspension mimics your own flexible joints, helping keep your movement fluid and natural as it distributes the load
  • Zippered main compartment with 2 internal mesh organizer pockets; zippered accessory pocket with internal security pocket
  • Hydration sleeve with external access (reservoir sold separately)
  • The Gregory Miwok 24 Pack features an expandable stretch front pocket with tuck-away bungee closure that fits helmets
  • Dual external side pockets; dual quick-access waist belt pockets; side compression straps; hydration tube clip and sunglasses loop on the shoulder straps


View all Gregory Daypacks

REI membership


Best Use Hiking
Bag Style Backpack
Frame Type Internal
Ultralight Yes
Gear Capacity (L) 24 liters
Gear Capacity (cu. in.) 1,465 cubic inches
Weight 1 lb. 9 oz.
Fits Torso 14 - 22 inches
Fits Waist/Hips 26 - 40 inches
Material(s) Ripstop nylon
Frame Material HDPE framsheet
Number of Stays 1
Pack Access Top
Number of Exterior Pockets 6 + main compartment
Dimensions Unavailable
Gender Unisex

The REI Difference

100% satisfaction guaranteed

We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

Gear & advice you can trust

At REI, we live and breathe the outdoors, and we're passionate about sharing our expertise with people of all skill levels. Whether you're new to the outdoors or a seasoned explorer, we'll take the time to understand your needs and help you find the right gear for you.

10% annual member refund

Anyone can shop at REI, but for a one-time $20 fee you can become an REI member and enjoy a lifetime of benefits. These include an annual member refund, typically 10% back on eligible purchases.*



*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips, REI Garage, and discounted items. Learn more