Gregory  Nano 18 H2O Hydration Pack - Plus Size

Members, log in and use coupon code ANNIV24 at checkout to save 20% on this item thru 5/27. Exclusions apply.
Color: Red Rock
Size: One Size
Shipping restrictions apply.

Members get an estimated $8.00 (10%) back on this item as a part of your annual .

Members get an estimated $8.00 (10%) back on this item.
To buy,  sign in as an REI Co-op Member or join now.

A handy companion for a busy weekend, spontaneous hike or music festival, the plus size Gregory Nano 18 H2O hydration pack hauls all of your must-haves—and 3 liters of water—when you're out and about.


  • Gregory Plus Size packs are designed with extended-length shoulder straps and hipbelts, plus additional fit revisions to accommodate larger body shapes and sizes
  • Plus Size fit is comparable to 2x–6x in apparel sizing, and the torso sizing remains consistent with other Gregory products
  • Included quick-drying 3D Hydro 3 L reservoir fits in a separated zippered compartment to help you stay hydrated on the move
  • Top zippered pocket with a key clip, zippered side stash pocket and side mesh water bottle pocket
  • Grooved foam back panel allows air to flow freely, keeping your back cooler
  • Padded shoulder straps with a magnetic sternum buckle and integrated hydration routing
  • Easy-pull top drawcord opening lets you quickly and conveniently access your stuff
  • Reflective attachment loops to secure water bottles and other trail accessories
  • Removable webbing hipbelt helps balance your load
  • Padded tubular webbing haul handle adds carrying comfort
  • Custom ComfortGrip molded zipper pulls
  • Designed using the Gregory Lifecycle Analysis tool and using recycled materials to provide a 40% reduction in carbon footprint compared to a conventional nylon pack


View the Gregory Nano Product LineView all Gregory Daypacks

Technical Specs

Item #218022
Best Use


Frame Type


Gear Capacity (L)

18 liters

Gear Capacity (cu. in.)

1,098 cubic inches

Reservoir Compatible


Reservoir Included


Liquid Capacity (L)

3 liters

Liquid Capacity (fl. oz.)

101 fluid ounces


1 lb. 2.9 oz.

Fits Torso Length (in.)

14-19 inches

Fits Waist/Hips

Up to 60 inches


210-denier high-density nylon (40% recycled)/450-denier recycled polyester

BPA Free


Pack Access


Number of Exterior Pockets

3 + main compartment



Bite Valve Shut-off Switch


Raincover Included



19.5 x 10.25 x 6.5 inches




Contains recycled materials

13 reviews with an average rating of 4.4 out of 5 stars

Loading Reviews...

Questions & Answers

Loading Questions...