Keeping kids warm on a budget can feel like a juggling act, especially when they’re growing fast. The good news is you don’t need top-end technical kit to keep them comfortable on school trips, family camps or chilly walks in the park.
Here we’ve picked the cheapest junior base layers for 2026 that are still worth buying. They focus on day‑to‑day comfort, easy washing and reliable warmth rather than fancy fabrics.
Every option here trades a bit of outright performance for price, but they all offer solid value. The key is matching the right top and bottoms to how often your child will be wearing them and how cold their adventures are likely to be.
These recommendations are based on careful comparison of price, specification and brand track record rather than simply picking the lowest ticket price. We look for junior base layers that offer reliable warmth, all‑day comfort and straightforward care at a cost that makes sense for fast‑growing kids.
We pay attention to features that matter in real family use, such as how easy a fabric is to wash and dry, whether it is likely to feel soft against young skin and how versatile it will be for everything from PE to camping. We also consider wider owner feedback and the reputation of brands sold by Go Outdoors, avoiding options that feel like a false economy.
Our aim is to highlight cheap kids’ base layers that you can buy with confidence, knowing they’ll do the job without needing a premium price tag.
We started by looking at the lower-priced junior thermals available through Go Outdoors, focusing on pieces that come in at the very affordable end of the range. From there, we prioritised simple, reliable designs from brands that are well established in the UK outdoor market.
Any options that looked too flimsy, overly specialised or awkward to care for were ruled out. For base layers, being soft, warm and easy to wash is far more important than exotic fabrics, especially when you’re kitting out children.
We also made sure to include both tops and bottoms so you can build a full set if you wish, or just plug the most important gaps in your child’s wardrobe to suit your budget. The end result is a compact list of cheap kids’ base layers that should serve well for camping, school trips and weekend adventures alike.
Below you’ll find our top cheap junior base layer picks for 2026, all from Peter Storm’s value-focused kids’ thermal range. Prices sit firmly at the budget end, but the designs are practical, cosy and easy to live with.
Some of these options are ideal as a simple first set of thermals, while others are better as spares or for children who spend a lot of time outdoors. All of them offer solid warmth for the price, so you can choose the mix of tops and bottoms that fits your child and your wallet.
Simple, cosy thermal pants that give kids an instant warmth boost under walking trousers or school uniform at a very wallet‑friendly price.
These Peter Storm kids’ thermal base layer pants are a straightforward way to keep little legs warm when the temperature drops. The fabric is designed to trap heat close to the skin while still being light enough to fit comfortably under school trousers, walking trousers or pyjamas. They are easy to wash and dry, which is a big plus when you are dealing with muddy campsites and busy family life. At this price, they offer impressive versatility, working just as well for winter walks as for chilly mornings on the way to school.
As a budget pair of thermal pants, they are unlikely to be as breathable or as odour‑resistant as premium merino options. Heavier use, such as very regular winter hiking, may reveal their limits compared with higher‑end kit. If your child runs very hot, they may find them a bit warm for indoor wear.
Ideal for parents who want an affordable, no‑nonsense pair of kids’ thermal bottoms for camping, school trips or winter walks. They suit children who feel the cold in their legs and need an extra layer under trousers without feeling restricted. They are also a good choice if you want a spare pair of warm pyjama bottoms for chilly caravans or tents.
A classic long‑sleeved kids’ thermal top that works for everything from camping to PE, offering dependable warmth for a modest outlay.
The Peter Storm Kid’s Thermal Crew Top is a solid all‑rounder for families watching the pennies. Its long sleeves and crew neck give good coverage, and the simple design means it layers neatly under hoodies, fleeces and waterproofs without bunching up. The synthetic fabric is practical for regular use, drying quickly after washing and coping well with repeated wear. Given the low price, it is an easy way to add a proper base layer to your child’s outdoor kit without overthinking it.
This is a no‑frills thermal top, so you do not get advanced features like zoned ventilation or premium natural fibres. It may feel a bit basic compared with more expensive technical layers, and very active kids might find it holds onto sweat more than high‑performance fabrics. For serious year‑round hillwalking, you might eventually want to upgrade.
Best for families looking for a single, do‑it‑all thermal top that can handle everything from Cub camp to frosty football training. It is a sensible first base layer for kids who are just starting to spend more time outdoors. Choose this if you want one affordable top they can wear across lots of different activities.
The same practical Peter Storm thermal top in a purple colourway, ideal for kids who prefer something brighter without stretching the budget.
This purple Peter Storm long‑sleeved thermal top offers the same core warmth and practicality as the navy version but with a more colourful look that some kids will prefer. It is still a budget‑friendly pick, so you are not paying extra just for a different colour. The fabric should feel soft against the skin and is simple to care for, making it suitable for frequent use on school trips or sports days. As part of a matching set with the purple bottoms, it makes it easy to spot and pack your child’s kit.
Aside from the colour, there is little to separate this from the standard navy version, so you are mostly choosing based on style. As with other budget synthetics, it will not match the odour control or long‑term softness of higher‑priced merino or blended tops. Very intensive use could highlight those differences sooner.
A great option for kids who prefer a bit of colour in their outdoor kit and are more likely to wear thermals if they like how they look. It is well suited to school residentials, Brownies or Guides camps and general weekend adventures. Pick this if you are building a simple but coordinated budget set with the matching purple bottoms.
A second variant of the Peter Storm kids’ thermal pants, perfect if you want an extra pair for rotation without spending more.
This second listing of the Peter Storm kids’ thermal pants effectively gives you another low‑cost route to building up your child’s thermal drawer. Having a spare pair is extremely handy for longer trips or for children who are outdoors most days. You get the same straightforward warmth and easy‑care fabric, so you can rotate pairs without worrying about them being ready in time. For the money, it provides sensible backup rather than having to rely on a single pair.
Functionally this is very similar to the first pair of Peter Storm thermal pants, so there is no extra tech or special fabric to justify buying both beyond convenience. Like any cheap synthetic thermal, it will not be as breathable or durable as premium options under heavy, long‑term use. If you only need one pair, there is little reason to prioritise this over the main listing.
Ideal as a second pair of thermal bottoms for busy weeks, longer trips or siblings who might share kit. It is a sensible add‑on if you already like the Peter Storm thermals and just want more coverage without spending much more. Go for this if you value having backups ready to go between washes.
Purple kids’ thermal bottoms that pair neatly with the matching top, giving full‑length warmth at one of the lowest prices in the range.
The Peter Storm Kids Thermal Pants in purple are a good match for children who like something a bit brighter than standard navy kit. They offer the same kind of insulating warmth you would expect from budget thermals, helping to keep legs comfortable when standing around camp or on frosty school mornings. The synthetic fabric should wash well and dry quickly, which matters when a sudden cold snap hits and you need them back in action. Paired with the purple top, they create a full thermal set for a reasonable total outlay.
These purple thermal bottoms share the same basic construction as the other Peter Storm options, so performance is more about value than cutting‑edge tech. They may feel a touch warm indoors for children who run hot, and they will not have the refined moisture management of high‑end base layers. If colour is not a priority, you may be just as happy with the standard navy versions.
Best for children who want full‑length warmth in a more fun colour, especially when paired with the matching top. They suit camping, glamping and winter school runs where comfort matters more than technical performance. Choose these if you are putting together a coordinated, budget‑friendly thermal outfit your child will be happy to wear.
