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  • Variquick harness allows quick, easy adjustment of torso length for kid's growing frame
  • Back panel features twin vertical air-mesh foam pads that work like a chimney to vent away warm air and sweat
  • Contoured, padded harness lined with air-mesh for breathability; harness features stabilizer straps for ideal positioning of pack
  • Soft hipbelt wraps the body, stabilizing and controlling the pack's lateral movements
  • Top loading main compartment has plenty of room for an overnight or lightweight weekend trip
  • 2 lid pockets and side bellows pockets store often-accessed gear such as snacks, headlamp, hat, sunscreen and bug repellent
  • Hydration-compatible design features reservoir pocket and drink tube exit port for on-the-go hydration (reservoir sold separately)
  • 2 side mesh pockets are roomy enough for water bottles
  • The Deuter Fox 40 pack features a bottom zippered compartment for separate access to a sleeping bag or for storing dirty clothes away from clean gear
  • Side compression straps let you cinch down loads for jostle-free carrying; ice axe loops and pole attachments allow additional gear to be strapped on to the pack exterior


View all Deuter Backpacking Packs

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Best Use Backpacking
Frame Type Internal Frame
Gear Capacity (L) 40 liter
Gear Capacity (cu. in.) 2,440 cubic inches
Weight 2 lbs. 14 oz.
Weight - Metric 1.3 kilograms
Adjustable Torso Yes
Fits Torso 11 - 18 inches
Fits Waist/Hips 24 - 36 inches
Material(s) Ripstop and ballistic nylon
Frame Material Nylon framesheet
Number of Stays 0
Pack Access Top/front
Number of Exterior Pockets 5 + main compartment
Sleeping Bag Compartment Yes
Gender Kids'
Rated 5 out of 5 by from Perfect for a growing boy I purchased this for my 6 yr old because it will fit such a wide range of sizes. It is easily adjustable, and adjusts in one inch increments. I used it on one trip where I put it on one of my 4 yr old twins, it was too big for him but it worked, but decided I needed a 2nd Camel Back. This bag adjust so much, that I extended it to its max size, and used it for day hikes from camp. It fit's my son's sleeping bag just fine, which is fairly compact; it is the North Face Tigger. I expect him to use it through scouts until he's nearly full size, and we get him an adult bag. The quality is great, and I fully expect it to last a long time.
Date published: 2012-05-20
Rated 5 out of 5 by from First Boy Scout Backpack This is my son's first Boy Scout backpack for extended hikes and overnighters. He is a skinny active kid and weighs 78 pounds. This pack fit his current torso and waist size and has enough room to grow with him for a while. He loaded it up this morning with the gear he needed for an overnighter. The weight came out to be 19lbs. He carried it fine on the three mile test hike and said it was comfortable and well padded. He loves it and is so proud of it. It has the right amount of pockets, loops and straps. We didn't add in or use a hydration system, but there is space available for it.
Date published: 2013-04-07
Rated 5 out of 5 by from Rare gem for petite adults I used this backpack to hike the Grand Canyon down to the river and up (25+ miles of mostly non-flat terrain). I am a 5'1" woman with a 14" torso (per REI measurements). Packs larger than daypacks rarely fit me properly as they are meant for torsos 16" or longer. With its adjustable torso settings, I could carry 15-20 lbs (incl. my 3L water bladder) in this pack on the hike without feeling any pain or drag on my shoulders/back or the need to constantly adjust the weight that I feel with less well-fitting packs. I liked the zippered side pockets and bottom access for sleeping bag. The hipbelt does not have the small pockets that most other 40L+ packs have. However, it was not a setback for me as I find those pockets often brush/scrape against my forearm as I walk. I use hiking pants with lots of pockets so small things can be stored there without scratching my arms. I am very glad that this pack, though meant for kids, does not have kiddie/silly/cutesy decorations or bling.
Date published: 2014-11-15
Rated 5 out of 5 by from Happy so far My son is going to be crossing over to Boy Scouts next year, and I purchased this as a first gear item to hopefully help make getting his stuff in to summer camp this year easier. The amount of torso adjustments means this bag should last him for years. The sleeping bag (Mountain Hardwear Lamina 35, for reference) I got for him fits perfectly in the bottom of the bag, even uncompressed (but in the compression bag). When I compressed it and tested the fit again I had enough room beside the bag that I could have fit a bag liner or perhaps on overbag next to it. Quite happy so far with the amount of room, it was easy to adjust for his torso length, and he says it's comfortable. Will get it's first test run this next week. :)
Date published: 2011-07-11
Rated 5 out of 5 by from Very functional Purchased the pack for my 12 year-old son for an overnight backpacking trip into the Shenandoah's to one of our favorite fly fishing spots. We were carrying all our fly fishing (waders, boots, rods, etc) as well as camping gear and I was amazed at how functional the Deuter Fox 40 was for fitting everything my son needed. The pack is sturdy, made of seemingly good quality, heavy material (ballistic nylon). The side pockets and straps held a four-piece rod tube and water bottles perfectly and the loops and straps all seemed to be in just the right places to attach gear. The 40 liter capacity was ample for sleeping bag, clothes, and misc gear. All the straps and loops held up fine, even though we needed to dangle his wet wading boots (heavy when wet) from the loops on the back of the pack. The back straps are also easily adjusted so you can have the pack ride as high as you need depending on the load distribution. The hipbelt seems well padding and has good width. One thing I noticed though, is that it's important to take the time to make the harness and hipbelt adjustments completely before youthful exuberance to get going takes over. This helps to avoid pressure points on the hips that tend to creep up after a couple miles on the trail. All in all, my son likes the pack and I'm very pleased with the purchase.
Date published: 2013-04-19
Rated 4 out of 5 by from Pretty good kids pack I bought this pack for my 13 yr old son who is a little over 5 ft tall and 90 lbs. The pack fits great and he said it was very comfortable over our 2 day trip this weekend. I'm pleased with the construction and the various compartments. As others have said, it is a bit too small to carry a large sleeping bag. My adult 15 deg synthetic bag just wouldn't fit even with a compression bag. So he carried my adult 15 deg down bag instead which fit just fine. If he needed to carry a tent and more than day's food, things would have needed to be lashed to the outside of the pack. As it was I carried the group gear and he carried all his own personal gear. Net review: You can't fit a 15 deg synthetic bag in it and carry anything else. If you have a down bag or a summer weight bag you'll be fine. If you need your child to carry group gear you'll wind up lashing it to the outside. Overall I'm happy with it though as I'm willing to shlep the heavy stuff to make it a nicer trip for him.
Date published: 2013-05-28
Rated 4 out of 5 by from Not ready for this I bought this hoping my son (6) would use it on overnight backpacking trips but I it was too much space for him. When packing for a trial hike he stuffed rain boots and toys in there which was funny but a tad scary. I will get the 30L (wish they had it in stores) to see if this is much better for limiting what goes in. The torso was adjustable and fit great he is on the slim side but it looked great and he carried it around the store with 10pounds for about a 30 min easy. Great pack for older kids or kids who are able to carry more but I would get the smaller one if your kid isn't going to carry too much
Date published: 2017-05-15
Rated 3 out of 5 by from disappointed We own 2 Deuter adult size packs and absolutely love the room and comfort so ordering for our 10 year old seemed like a no brainer. However when we went to load this pack to test comfort level for her, we could not get her compressed (adult size) sleeping bag into the sleeping bag compartment without standing it on its end which consumes the pack's capacity. Bummer! Doesnt make any sense to have a pack sized up to accomodate a 'youth' but expect them to still be sleeping in a little kids sized sleeping bag!
Date published: 2011-01-19
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Can anyone tell me the approximate maximum dimensions of the pack? I.e., a few reviews have mentioned difficulty fitting adult sleeping bags into the bottom of this pack; I'd like to know if a 14x7in or 11x7in one would fit without being packed vertically

Asked by: the girl from the canyon
I am able to fit the new REI Co-op Igneo 17 Adult Regular Sleeping Bag in it's stuff sack (8x18)(so not even in a compression sack, which would make it smaller yet) horizontally in the bottom section of the bag. This does require some compression while packing the sleeping bag but I certainly wasn't straining the backpack and had no issues zipping the bottom compartment back up.
Answered by: Eversilver9130
Date published: 2017-04-14

How do you measure torso for selecting the right size backpack?

Asked by: KiddKampers
Checkout the link below for instructions and diagrams.
Answered by: REIservice
Date published: 2017-05-29
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