How to Choose a Kids' Backpack for Outdoor Adventures
Giving children their own backpack can make outdoor adventures more enjoyable while encouraging independence and responsibility. Whether you're planning a countryside walk, a family holiday, a school trip or a day exploring the outdoors, a suitable backpack allows children to carry a few of their own essentials.
However, choosing a children's backpack involves more than picking an appealing colour or design. Size, weight, fit, comfort and the child's age all influence how practical a backpack will be.
In this guide, we'll explain how to choose a kids' backpack, what features to look for and how to make sure it's comfortable and appropriate for your child's activities.
Why Choose a Backpack Designed for Children?
Children have different body proportions and carrying abilities from adults.
A backpack designed for an adult may be too long, too wide or difficult for a child to adjust correctly.
Purpose-designed children's backpacks may offer:
- Shorter back lengths.
- Narrower shoulder straps.
- Smaller carrying capacities.
- Adjustable straps suited to smaller bodies.
- Lightweight construction.
- Compartments that are easy to access.
- Child-friendly fastenings.
The aim is to choose a backpack that fits the child comfortably without encouraging them to carry unnecessary weight.
What Size Backpack Does a Child Need?
Backpack size is one of the most important considerations.
A backpack should be proportionate to the child's body and large enough for the intended equipment without being unnecessarily bulky.
Children's backpacks are often described by their capacity in litres, but capacity alone doesn't tell you whether a particular design will fit correctly.
Consider both the external dimensions and the usable internal space.
Small Backpacks for Younger Children
Smaller backpacks are generally more appropriate for younger children who only need to carry a few lightweight belongings.
Typical contents might include:
- A small water bottle.
- A lightweight waterproof jacket.
- A snack.
- A sun hat.
- A small personal item.
For younger children, comfort and manageable weight are more important than maximum storage.
Backpacks for Older Children
Older children may need additional capacity for longer walks, school trips or outdoor activities.
Depending on their size and abilities, they may be able to carry extra clothing, food and other lightweight essentials.
However, a larger backpack should only be chosen when the child can wear it comfortably and carry the intended load safely.
Understanding Backpack Capacity
Backpack capacity is usually measured in litres.
The following table provides broad examples of how different capacities might be used. These are not age-based recommendations or safe carrying limits.
| Capacity | Possible Use | Considerations |
|---|---|---|
| Up to 5 litres | A few lightweight personal items | Check whether essentials will fit |
| 5–10 litres | Short outings and simple day trips | Useful for a jacket, snack and small bottle |
| 10–15 litres | Longer days with additional equipment | May be too large for smaller children |
| 15 litres and above | Older children with greater carrying requirements | Fit and loaded weight become especially important |
These capacities are only a starting point. Always assess the individual child's size, comfort and ability to carry the intended contents.
How Should a Kids' Backpack Fit?
A correctly fitting backpack should sit securely against the child's back without restricting normal movement.
Check the following features when trying one on.
Back Length
The backpack should be proportionate to the child's torso.
A pack that extends too far below the lower back or sits awkwardly above the shoulders may be uncomfortable.
Shoulder Straps
Shoulder straps should rest comfortably on the shoulders without digging in.
They should be adjustable enough to hold the backpack close to the body.
Chest Strap
Some children's backpacks include a chest or sternum strap.
This can help keep shoulder straps in position, particularly when walking.
Adjust it according to the manufacturer's instructions so that it doesn't restrict breathing or movement.
Waist Belt
Larger children's backpacks may include a waist belt.
Depending on the design, this can help stabilise the load or transfer some weight towards the hips.
For smaller backpacks, a waist belt may be unnecessary.
Overall Comfort
Ask the child to walk around while wearing the backpack with a realistic load.
Look for slipping straps, excessive movement or signs of discomfort.
A backpack that fits well when empty may feel quite different once packed.
How Much Weight Should a Child Carry?
The amount a child can comfortably carry depends on their age, physical development, size, fitness and the activity involved.
There is no single backpack weight limit that is appropriate for every child.
As a general principle, keep loads as light as reasonably possible.
Children should not be expected to carry equipment that causes pain, excessive fatigue or difficulty maintaining their balance.
Parents and carers should carry heavier shared equipment, particularly on longer walks.
Signs a Backpack May Be Too Heavy
- The child leans forward noticeably to compensate for the load.
- Shoulder straps dig into the skin.
- The child struggles to maintain normal walking posture.
- The backpack causes discomfort or pain.
- The child becomes unusually tired.
- The load affects balance or movement.
If these problems occur, reduce the load and reassess the fit.
What Features Should You Look For?
Different backpacks offer different combinations of practical features.
Adjustable Shoulder Straps
Adjustability helps achieve a secure fit and may allow the backpack to accommodate some growth.
However, don't choose an oversized backpack simply because a child might grow into it.
Padded Back Panel
A padded back panel can improve comfort by reducing pressure from the contents.
Padding should be appropriate for the size and intended use of the backpack.
Water Bottle Pockets
External bottle pockets can make it easier to carry drinking water separately from clothing and other belongings.
Check that bottles fit securely and are accessible when needed.
Easy-to-Use Zips and Buckles
Children should be able to access their belongings without struggling with complicated fastenings.
However, younger children may still need adult assistance.
Reflective Details
Reflective features can improve visibility when illuminated by vehicle lights or other light sources.
They are useful additions but do not replace suitable supervision, safe route choices or other visibility measures.
Internal Compartments
Compartments can help separate snacks, clothing and personal belongings.
Too many compartments, however, may make a small backpack unnecessarily complicated.
Grab Handle
A carrying handle can make it easier to lift or hang the backpack when not being worn.
Are Waterproof Kids' Backpacks Worth It?
Weather protection can be useful for outdoor activities, particularly in the UK.
However, there's an important difference between water-resistant and waterproof construction.
Water-Resistant Backpacks
A water-resistant backpack may shed light rain or splashes but can allow water inside during prolonged exposure.
Waterproof Backpacks
A genuinely waterproof backpack requires suitable materials and construction, including protection at closures and seams.
Not every backpack advertised for outdoor use is fully waterproof.
For ordinary day trips, a water-resistant backpack with suitable internal protection may be sufficient.
Important items can also be stored inside waterproof bags where appropriate.
Always check the manufacturer's claims rather than assuming that a coated fabric makes the entire backpack waterproof.
Which Backpack Materials Are Best?
Children's backpacks are commonly made from synthetic fabrics such as polyester or nylon.
These materials can offer a practical balance of durability, weight and ease of cleaning.
When comparing backpacks, consider:
- Fabric strength.
- Stitching quality.
- Zip construction.
- Reinforcement at carrying points.
- Resistance to everyday wear.
- Ease of cleaning.
A heavier fabric isn't automatically better. For smaller children, keeping the empty backpack lightweight is particularly important.
What Is the Best Backpack for a Toddler?
For toddlers, a small and lightweight backpack is usually more practical than a large hiking-style pack.
Look for:
- Age-appropriate sizing.
- Comfortable shoulder straps.
- Simple fastenings.
- Lightweight construction.
- Enough room for a few small belongings.
Adult supervision remains essential, particularly around roads, water and other hazards.
Do not attach unsuitable cords, accessories or heavy objects to a toddler's backpack.
What About Backpacks with Reins?
Some backpacks for younger children incorporate a detachable or integrated walking rein.
These products are designed to provide an additional means of keeping a child close to an accompanying adult.
When considering a backpack with reins:
- Check the manufacturer's age and size requirements.
- Ensure the backpack and rein are designed to be used together.
- Follow the fitting and supervision instructions.
- Check straps and attachment points regularly.
- Avoid using the rein in ways that could pull the child off balance.
A walking rein is not a substitute for close adult supervision and should not be used to suspend, lift or restrain a child contrary to the manufacturer's instructions.
What Is the Best Backpack for Primary School Children?
For primary school children, choose a backpack that fits their body and accommodates the equipment needed for the activity.
Useful features may include:
- Adjustable shoulder straps.
- A practical main compartment.
- Space for a water bottle.
- Durable, easy-to-clean fabric.
- Secure closures.
- Reflective details.
For outdoor school trips, check any equipment requirements provided by the school or organiser.
What Is the Best Backpack for Family Walks?
For family walks, children generally need less equipment than adults.
A small backpack might hold:
- A lightweight waterproof jacket.
- A small water bottle.
- A snack.
- A sun hat.
- A spare pair of socks.
Parents should carry shared essentials such as the main first aid kit, navigation equipment and any heavier items.
Keep the child's load manageable and adjust it if they become tired.
What Is the Best Backpack for Family Holidays?
For holidays, a lightweight backpack can give children somewhere to keep a few personal belongings during journeys and excursions.
Consider whether the bag will be used for:
- Travelling by car or train.
- Airport journeys.
- Day trips.
- Short walks.
- Visits to attractions.
For flights, check the airline's current cabin baggage rules if the backpack will be taken on board.
Choose a size that the child can manage comfortably rather than filling a large bag with unnecessary items.
How to Pack a Kids' Backpack
Correct packing can make a backpack more comfortable and easier to use.
Keep Heavier Items Close to the Back
Position relatively heavy items close to the child's back where the backpack's design allows.
This can help reduce unnecessary movement and improve balance.
Use Compartments Sensibly
Keep frequently needed items easy to reach.
Avoid placing sharp or hard objects where they may press against the child's back.
Avoid Overpacking
Only pack equipment the child can reasonably carry.
Adults should carry additional items when necessary.
Check the Fit After Packing
Adjust the straps once the backpack contains its intended load.
Make sure it remains secure and comfortable.
For more general advice, see our guide to organising a rucksack.
How to Encourage Children to Carry Their Own Backpack
Having their own backpack can help children feel involved in outdoor activities.
Start by allowing them to carry a few lightweight personal items.
As they become more comfortable, they can help decide what to pack for different outings.
Keep the experience positive and avoid treating the backpack as an obligation if the child becomes tired.
The aim is to build confidence and enjoyment rather than maximise the amount they carry.
How to Clean a Kids' Backpack
Children's backpacks can quickly collect mud, food crumbs and other dirt.
To keep one in good condition:
- Empty all compartments.
- Shake out loose debris.
- Check the manufacturer's cleaning instructions.
- Clean suitable areas with an appropriate method.
- Allow the backpack to dry thoroughly.
- Inspect straps, zips and stitching before the next use.
Do not assume a backpack is machine washable unless the care instructions permit it.
Common Mistakes When Choosing a Kids' Backpack
Buying a Backpack That's Too Large
An oversized backpack may fit poorly and encourage unnecessary packing.
Choosing by Age Alone
Children of the same age can differ considerably in height, build and carrying ability.
Ignoring the Empty Weight
A heavy backpack leaves less comfortable carrying capacity for the items inside.
Overloading the Backpack
Excessive weight can affect comfort, posture and balance.
Choosing Complicated Fastenings
Children may struggle to access their belongings if zips and buckles are difficult to operate.
Assuming Water-Resistant Means Waterproof
Water-resistant fabrics may not keep contents dry in prolonged rain.
Failing to Adjust the Straps
Even a correctly sized backpack can be uncomfortable if the straps are poorly adjusted.
Frequently Asked Questions
What Size Backpack Should a Child Have?
Choose a backpack that fits the child's body and provides enough capacity for the intended belongings without being unnecessarily large.
How Many Litres Should a Kids' Backpack Be?
Capacity depends on the child's size and the activity. Small packs may be suitable for a few personal items, while older children may need additional space for longer outings.
How Heavy Should a Child's Backpack Be?
Keep the load as light as reasonably possible. The child should be able to walk comfortably without pain, excessive fatigue or difficulty maintaining balance.
Are Chest Straps Useful on Kids' Backpacks?
They can help keep shoulder straps in position, particularly during walking, provided they are adjusted correctly.
Do Children Need Waterproof Backpacks?
Not necessarily. A water-resistant backpack may be sufficient for some activities, while additional waterproof protection can be useful in wet conditions.
Are Backpacks with Reins Suitable for Toddlers?
They can be suitable when specifically designed for the child's age and size and used according to the manufacturer's instructions with close adult supervision.
Should Children Carry Their Own Water?
Older children may be able to carry a suitably sized water bottle, provided the total backpack load remains comfortable. Adults should ensure adequate drinking water is available.
Can a Kids' Backpack Be Used for School and Hiking?
Some backpacks may be suitable for both, depending on their fit, construction, capacity and the requirements of each activity.
Final Advice: Choosing the Right Kids' Backpack
The best kids' backpack is one that fits comfortably, carries the necessary essentials and is appropriate for the child's size and activities.
For younger children, prioritise lightweight construction, simple fastenings and manageable capacity. For older children, adjustable straps, practical compartments and durable materials may become more important.
Remember that children should not be expected to carry heavy loads simply because a backpack has enough space.
Choose a comfortable fit, pack sensibly and encourage children to enjoy the experience of carrying a few of their own belongings.
Explore our Kids Backpacks page or visit the Kids' Outdoor Gear department for more family outdoor equipment and advice.