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  • Fixed top lid zippered compartment with under-lid zip pocket
  • Dual stretch-mesh side pockets and large front stretch-mesh pocket
  • Small external zippered pocket
  • Side compression straps
  • External reservoir sleeve (reservoir not included)


View all Osprey Daypacks

REI membership


Best Use Hiking
Bag Style Backpack
Frame Type Internal Frame
Gear Capacity (L) 18 liters
Gear Capacity (cu. in.) 1,098 cubic inches
Weight 1 lb. 3.4 oz.
Weight - Metric 0.55 kilogram
Fits Torso 12 - 17 inches
Fits Waist/Hips Unavailable
Material(s) 210-denier ripstop nylon
Frame Material Unavailable
Number of Stays Unavailable
Pack Access Top
Number of Exterior Pockets 7 + main compartment
Dimensions 20 x 10 x 9 inches
Gender Kids'
Rated 5 out of 5 by from Perfect hiking backpack starter for my 4 year old. Perfect first pack for my 4 year old. Being a fan of Osprey for my own backpacking I searched around and found this. The hip buckle disperses the weight and allows for the inclusion of a water bladder.Since my son now has his own pack, it has decreased my pack's weight by over 15 pounds since he can "carry his own weight". The cool part is a built-in whistle on the chest strap which can be a bit annoying at first when my son "tested" it, but is good to know he has one handy, just in case. The adjustments ability is great and a perfect miniaturized hiking pack for any kid starting out, without quality being compromised.
Date published: 2016-08-19
Rated 5 out of 5 by from Good Kids pack got these for the Kids 2 years ago when they were 6 + 8 they've used them on many backpacking trips and they still fit well at 8 and 10 years old . the packs are small so it limits the amount of weight each child can carry which is good they are comfortable and both girls can carry their pack easily 4 miles. Usual load is a down blanket, sleeping pad, rain gear, fleece, cup, and water bottle. The kids usually add a toy or book, or something. All the straps are sized correctly for children.
Date published: 2017-01-13
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How do you measure the torso?  Around the chest? up and down??

Asked by: Deirdre
The link below will provide you with instructions for finding the proper torso length for the Jet 18.
Answered by: REIservice
Date published: 2017-01-27

Can I use this as a backpack for my kindergartner? 

Asked by: Ericae
This bag is a super great bag, don't get me wrong. I just do not think it would be good for school. My view is that this bag is made to be opened just a few times per day, not like school where it would be opened every few hours. Look at the top, the cinch straps are made for pressing a change of clothing into the bag not books. My point is that the opening on top will make it hard to quickly open and close for one school book. 5 star bag, great for kids as young as 4 and old as 14 (depending on kid size) just not setup for school.
Answered by: J Jason
Date published: 2016-12-06

Is this pack waterproof ? 

Asked by: Runwild
The Jet 18 Pack is not waterproof. It is water-resistant, but the seams are not sealed. A 20 liter rain cover will protect this pack:
Answered by: REIservice
Date published: 2017-04-10
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