Gregory  Nano 18 H2O Hydration Pack

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

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Features

  • Included 3 L, quick-drying 3D Hydro reservoir helps you stay hydrated on the move
  • Easy-pull top drawcord opening lets you access your stuff quickly and conveniently
  • Plenty of pockets stash your must-haves: a top zippered pocket with a key clip, a zippered side stash pocket and side mesh water bottle pocket
  • Reflective attachment loops let you secure water bottles and other trail accessories
  • Padded tubular webbing haul handle adds carrying comfort
  • Removable webbing hipbelt helps balance your load
  • Custom comfort-grip molded zipper pulls

Imported.

View the Gregory Nano Product LineView all Gregory Daypacks

Technical Specs

Best Use

Hiking

Frame Type

Frameless

Gear Capacity (L)

18 liters

Gear Capacity (cu. in.)

1,098 cubic inches

Reservoir Compatible

Yes

Reservoir Included

Yes

Bottle(s) Included

None

Liquid Capacity (L)

3 liters

Liquid Capacity (fl. oz.)

101 fluid ounces

Weight

1 lb. 7 oz.

Fits Torso Length (in.)

14-19 inches

Fits Waist/Hips

28-48 inches

Material(s)

Nylon/polyester

Pack Access

Top

Number of Exterior Pockets

3 + main compartment

Hipbelt

Yes

Bite Valve Shut-off Switch

Yes

Dimensions

20 x 10 x 7 inches

Gender

Unisex

Buying Advice

Reviews
149 reviews with an average rating of 4.7 out of 5 stars

Ratings Snapshot

Product Rating

84 out of 93 (90%) reviewers recommend this product

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Average Customer Ratings

Overall Fit Rating

Runs SmallRuns Large

Ease of Use

Difficult to useVery easy to use

Most Helpful Favorable Review

5 reviews with an average rating of 5.0 out of 5 stars
Great Buy!
Rychlend MH
5 years ago
A great buy for day hikes! Could fit my camera and a couple lens and snacks inside the bag. The material is durable and provides plenty of pockets. Also the bag breaths on your back so your not sweating up a storm.
Rychlend MH
Dallas TX
41 people found this review helpful

Most Helpful Critical Review

5 reviews with an average rating of 2.0 out of 5 stars
For large people or men
jessieball
4 years ago
Loved the colors and the capacity of this bag. Unfortunately when I got everything strapped in, the top of the bag sat above my neck. Definitely built for men, not women. For reference, I'm 5'4" 124 lbs. Wish they made this exact bag for average sized women.
jessieball
21 people found this review helpful

Customer Images

Stephhikes8
Rated 5.0 out of 5 stars

Love!!

5 years ago

Initially I wanted a different pack but it wasn’t in stock and I needed one super last minute, this one had really good reviews and the price was right. I am actually in love with it, it was perfect for my last minute day hike. This made my old hydration pack look cheap because it is so well made and has great functionality. I had plenty of pockets and the water bladder system is amazing. I loved the magnetic strap because it is much more sanitary and keeps the bite out of the way and from flying everywhere. I wasn’t initially a fan of the color online but it is actually very beautiful in person. Great purchase, highly recommend!!

Yes , I recommend this product
Helpful?
Rychlend MH
Dallas TX
Rated 5.0 out of 5 stars

Great Buy!

5 years ago

A great buy for day hikes! Could fit my camera and a couple lens and snacks inside the bag. The material is durable and provides plenty of pockets. Also the bag breaths on your back so your not sweating up a storm.

Yes , I recommend this product
Helpful?
Jamison W
Philadelphia, PA (Used in Utah/AZ)
Rated 5.0 out of 5 stars

Great storage back and solid hydration quantity

5 years ago

Great storage in this bag in the multiple compartments. 3L pack was great for a mid-morning 7.2mile hike in Arches National Park in August. Held a friend's hydroflask 24OZ, several snacks, sunscreen and more items in the pack. Pro-tip: Fill the hydration pouch with ice, fill with water, and slip your pouch into a grocery bag to prevent the condensation from soaking your back!

Age:18–24
Weight:175–200 lbs.
Height:6'2"
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large

Ease of Use

Difficult to useVery easy to use
Helpful?
KseaB
Thunderbolt, GA
Rated 5.0 out of 5 stars

Light and Hydrated!

6 years ago

Absolutely love my new Gregory Pack! For one, my husband's name is Gregory, so I'm biased. For two, The design is super sleek and I love the Black with the aqua water tube. For three, it's perfect for Kayaking! I have tried several things before to stay hydrated on the water while kayaking, but never a Hyrdation Pack. This one adjusted to fit perfectly and I could easily wear it while paddling because it felt so light. I didn't have to worry about tying on a cooler or stuffing water bottles in the kayak by my feet, it was out of the way and kept my water cold the whole trip. I don't think I'll go kayaking without it now, a new must have addition for any trip!

Yes , I recommend this product
Helpful?
Mack
Received free product
Seattle,WA
Rated 4.0 out of 5 stars

Space efficient, but hard to get comfortable

6 years ago

When I first used this pack I didn't really care for it, I couldn't get it to sit right and stay comfortable. After I was done, I sat at home and messed with all of the straps until I got things fitting a bit better. It fit better, but the process took a good bit of time, and I would recommend budgeting in some time before you use this pack if you buy it. The next time I used it was better, and the pack was easier to ignore. I could pack all of my day-hiking essentials and pack away discarded layers as I went on. It was a really perfect size for comfortable hiking, and I love the green color, it was very visible for when I used it at dusk

Yes , I recommend this product
Helpful?
Talia
Rated 5.0 out of 5 stars

Great for what I need!

3 years ago

I haven't taken this on a hike yet, but I have used it as a small backpack for school or an overnight bag, and it's working great! It has a large stuff sack(ish) pocket that I've fit clothes, toiletries, and an iPad in with room to spare. There are two zipper pockets (not including the are for water) that are great for snacks, sunscreen, etc. Even though it is a slightly larger pack, it fits easily in my small bike basket if I don't feel like carrying it. The one thing I find kind of frustrating is that it has many chest straps that you can't remove if you don't need them.

Age:18–24
Weight:125–150 lbs.
Height:6'0"
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large

Ease of Use

Difficult to useVery easy to use
Helpful?
Mary Rich
Seattle, WA
Rated 5.0 out of 5 stars

Awesome pack for hiking or commuting!

5 years ago

Love this pack! It is sturdy and holds a lot more than you anticipate. My favorite features are the side pocket for easy access to a cell phone or snacks and the water bladder doesn’t make the water taste weird like other bladders do. It is also quite durable. I Also love the top compartment feature for items you want to easily access. I actually have two of these packs now that I alternate between when I hike. Well made and worth the price! The only thing I wish it had is a zip pocket on the outside of the main bag.

Age:25–34
Weight:100–125 lbs.
Height:5'3"
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large

Ease of Use

Difficult to useVery easy to use
Helpful?
RikaRoss
Received free product
Flagstaff, AZ
Rated 5.0 out of 5 stars

Best Snowboarding Pack

6 years ago

I was a little hesitant of this pack because I have my own favorite brands, but I fell in love after my first day snowboarding with it. It was the perfect day to test it because we got about 8 inches in the time I had been up on the mountain, so was constantly in snow. It kept everything inside completely dry. My personal favorite part was the zipper in the brain area. I kept my keys, a bar, chapstick, and a trail map up there and was happily surprised with how dry everything stayed. The inside is deceptively spacious, I could fit an extra fleece, my lunch, extra socks, and water bottle inside. I also loved the size, I struggle to find packs that fit me well (I'm only 5'0) and tis one adjusted perfectly. My one complaint with this pack (not big enough to lower my rating) is the magnet for the hose to the strap. I was so excited to see that it had that because I hate when my hose is loose and bugging me, but the magnet didn't seem to work. If I'm not wearing it, it will stay fine on the strap. But once the pack is on, the magnet isn't strong enough to hold it. I kept having to reach back and do weird stretches to find the hose when I needed it. While snowboarding it wasn’t a huge issue, but I could see how it would be more of a hassle hiking in the summer.

Yes , I recommend this product
Helpful?
Mboron
Rated 5.0 out of 5 stars

Perfect size for day hikes and outings

4 years ago

I was looking for a backpack/hydration combo. There are a lot to choose from. I found this one to be the perfect fit for me. I don't do huge hikes or extreme outdoor stuff, so this carries the right amount of water for a day out on the trails, and also has plenty of room for snacks, spare coat, etc. If you are more hard core at your outdoor sports, this model might not carry enough water. That will vary of course from person to person. I haven't used mine a lot yet, but so far seems to be built well and is working fine. It's very easy to clean and dry out the hydration bag and hose.

Age:45–54
Weight:175–200 lbs.
Height:5'10"
Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large

Ease of Use

Difficult to useVery easy to use
Helpful?
WasatchWiggler
Salt Lake City, Utah
Rated 5.0 out of 5 stars

Stealthy and Bomber

6 years ago

I was in the market for a new super light multi purpose hydration pack and this new Nano is just about perfect. When the bladder is removed the pack can roll up fairly small which will be perfect to toss in my river bag for day hikes and also a perfect summit pack for backpacking trips. I went ahead and purchased the 2L bladder additionally so I have options on the amount of water I carry. I also realized that the hydration sleeve fits my 13 inch MacBook quite well. I really do love a pack that can tackle any task you throw at it.

Yes , I recommend this product
Helpful?
1 - 10 of 149 Reviews

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