Kids' & Youth Hiking Backpacks: Complete Guide
Comprehensive technical analysis of sizing, materials, installation requirements, and manufacturer standards for kids' & youth hiking backpacks.
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In plain English
A kids' hiking backpack is sized for a child's shorter back, not just made smaller all over. If a pack is too long, it hangs low and pulls backward, like a coat that is three sizes too big.
How much a child should carry is the most important choice. A good starting point is a small share of their body weight. For a young child, that might mean just a water bottle, a snack and a jacket. A liter of water alone weighs about as much as a bag of sugar, so small packs fill up with weight fast.
Teach kids to use both shoulder straps, to clip the waist strap, and to tell you if something hurts. Growing bodies change quickly, so check the fit every few months. If a child has back or shoulder pain that does not go away, see a doctor.
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A kids' hiking backpack scales torso length and load down so young hikers carry weight safely, rather than shrinking an adult pack's proportions and calling it a youth model. The right kids' or youth pack uses a genuinely shorter torso range, a lighter or minimal frame, and a lower recommended load ceiling than any adult pack in the same liter class. Fit matters more for a growing child than for an adult, since a poorly sized pack causes real shoulder and hip discomfort and can be the reason a young hiker doesn't want to go again. This guide covers daypacks sized for young kids, adjustable youth packs built to fit across several growth seasons, and the larger overnight packs teenagers use once they're ready to carry real trail weight. Toddlers who ride rather than walk need a different category entirely — a child-carrier backpack built for carrying an infant or toddler on an adult's back.
Size a kids' backpack the same way you size an adult one: measure torso length from the C7 vertebra at the base of the neck to the iliac crest at the top of the hip bones, then match that number to the brand's kids'-specific size chart instead of guessing from age or height alone.
Height and age predict torso length poorly, since two eight-year-olds can differ by several inches in torso length even at similar heights. Kids' torsos are much shorter than most adults', which is why adult packs sized down rarely fit a child correctly even at the smallest adjustment setting.
Hipbelt fit matters as much as torso length on any kids' pack built with a real frame: the belt should sit over the hip bones, not the waist, so it can carry its share of the load the same way an adult hipbelt does.
Children should carry much less than adults, and the figures below follow one major pack maker's advice (Deuter) rather than a fixed percentage of body weight. One review of pack ergonomics likewise suggests keeping a child's total load to about 10% of body mass or less.
| Age band | Suggested maximum load | Typical pack role |
|---|---|---|
| Under 4 | Rides in a child carrier, doesn't carry a pack | Passenger, not hiker |
| Preschool | About 2 lb (1 kg) | First light daypack, often just water and a toy |
| Elementary school | About 7 lb (3 kg) | Own daypack with a few of the ten essentials |
| Under 12 (upper limit) | About 9 to 11 lb (4 to 5 kg) | Daypack or light overnight share |
| Teens up to 16 | About 15 lb (7 kg); older teens work toward adult loads as fitness and experience allow | Youth or full-size overnight pack |
These figures are guidelines, not hard limits — a child's fitness, hiking experience and the trip's terrain all shift the right number up or down. A hipbelt still does most of the work on any framed kids' pack carrying real weight, transferring, by a common rule of thumb, roughly 80% of the load the same way it does on an adult pack, so a beltless daypack should stay light regardless of the child's age.
Most kids can start carrying a very light daypack of their own around age 4 to 6, holding water and a comfort item, then take on a real share of the group's gear — snacks, a layer, a water bottle — by roughly age 7 to 10 once they can manage buckles and zippers independently.
Toddlers and preschoolers typically aren't carrying their own pack at all; they ride in a child-carrier backpack on a parent's back instead, which is a separate category built around the adult's fit and the child's safety harness rather than the child's own torso. Once a kid transitions from riding to walking full trips, a light daypack under a few liters is the natural first step, followed by a bigger kids' daypack as they take on more of their own gear.
By the early-to-mid teen years, many kids are ready for a genuine overnight backpacking pack and a real share of shared group gear — tent poles, part of the food bag, a share of cooking gear — provided the pack fits their torso length and the load stays within a safe percentage of their body weight. That transition is gradual and depends far more on a teen's fitness, hiking mileage and pack fit than on a birthday.
Youth packs that grow use an adjustable-torso suspension — the same ladder-lock strap system found on adult adjustable packs, scaled down — so one pack can fit a child across multiple growth seasons instead of being outgrown in a single year.
Osprey, Gregory and Deuter have each offered youth lines built specifically for kids and teens (model names and sizes change, so check each brand's current range) with shorter torso ranges, lighter frames and simplified hipbelts scaled to a child's build rather than a shrunk adult design. Smaller kids' daypacks cover the same idea for younger hikers who don't yet need an overnight pack.
An adjustable youth suspension typically covers several inches of torso growth, which can mean a few years of use for some kids before a full resize to a bigger pack becomes necessary — see how to size a kids' backpack for the measuring method to check when that point has arrived. Parents comparing the daypack side of this category against the buying criteria for a first kids' pack, or the bigger overnight packs a teen eventually graduates into, should treat torso fit and load percentage as the two numbers that matter most, well ahead of color, character branding or brand name.
Go Deeper
Detailed companion guides for kids' & youth hiking backpacks.
Best Kids' Hiking Backpacks
Buyer's guide: best hiking backpack for kids.
Best Backpacks For Teenage Hikers
Buyer's guide: best backpack for teenage hikers.
Adjustable Youth Packs That Grow
How adjustable-torso youth backpacks stretch to fit a growing kid across seasons, with real models, torso-growth range, and when to size up.
Child-Carrier Backpacks
Related backpacks by hiker guide.
Beginner Hiking Backpacks
Related backpacks by hiker guide.
What the load guidance really says
Guidance for children varies, and the numbers come from different places. The American Academy of Pediatrics, through HealthyChildren.org, advises that a child's backpack weigh no more than 15% of body weight.1 Nemours KidsHealth gives a range of 10 to 20%.2 A 2022 review of backpack ergonomics says children's total load should not exceed 10% of body mass, and a UK back pain charity set the same 10% line back in 1997.3,4
The authors of one study of students suggest even a 20% upper bound may be too high for younger children.5 That is why this page's table treats its figures as guidelines. The adult 20% figure it mentions is itself a hiking-community rule of thumb, not a research finding, so it should not be treated as a target for teens either.
Turning percentages into kilograms and liters
Deuter, a pack maker, puts its advice in plain weights. It suggests preschoolers carry no more than 1 kg, elementary-school kids up to 3 kg, under-12s no more than 4 to 5 kg, and teens up to 16 no more than 7 kg.6 It also suggests very small packs of no more than 5 liters for ages 1 to 3, 11 to 22 liter packs for school-aged children, and 30 liters or more for kids 8 and up depending on height.6
Water makes those limits easy to picture. A liter of water has a mass of about one kilogram.7 So a full one-liter bottle is a preschooler's entire allowance under Deuter's advice, and an adult carrying the family's spare water is often the simplest fix.
What the research can and cannot tell parents
Most studies look at school backpacks, not hiking. In one study of 500 students, children carried an average of 6.53 kg, or 13.53% of their body weight.4 In another, 75% of students carried more than 10% of body weight and 17% carried more than 20%.5 A study of 8 to 10 year olds, however, found no significant link between backpack weight or type and pressure pain threshold.8 The honest reading is that the evidence is mixed, and the lower end of the guidance costs nothing on a hike.
Fit habits have clearer support. The AAP says children should use both shoulder straps, since one-shoulder carrying can strain muscles, and that belts and straps spread weight more evenly.1 Nemours adds that a waist belt helps and that the pack should rest in the middle of the back rather than sagging toward the buttocks.2