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Affordable Mattresses for Kids

By Kiran Shukle | Last Updated 15th September 2026
Comfortable children's mattress and bedding for a restful night's sleep

Finding an affordable mattress for your child does not mean you have to compromise on comfort, support or quality. Children spend a significant amount of time asleep, and choosing the right mattress can help create a comfortable sleep environment as they grow.

With children's mattresses available in different sizes, materials, firmness levels and price points, it can be difficult to know where to begin. The good news is that you do not necessarily need to spend a fortune to find a mattress that provides the support and comfort your child needs.

In this guide, we'll look at what to consider when shopping for an affordable kids mattress, including size, mattress type, firmness, durability and practical features that can help you get better value from your purchase.

What Makes a Good Affordable Kids Mattress?

A budget-friendly mattress should still provide the essentials: appropriate support, a comfortable sleeping surface, suitable construction and a size that works for your child's bed.

It is tempting to focus entirely on the price tag, but the cheapest mattress is not always the best value. A mattress that is well suited to your child's needs and lasts through several years of use may offer better value than replacing a poorly suited mattress sooner.

Mattress365's Kids Mattress Buying Guide covers the main factors to consider when choosing a mattress for a growing child, including size, materials, comfort and support.

Affordable does not have to mean basic. The best-value kids mattress is one that provides the right support, fits the bed properly and continues to meet your child's needs as they grow.

Choose the Right Mattress Size

One of the easiest ways to get better value from a kids mattress is to choose a size that gives your child enough room to grow. Replacing a mattress simply because your child has outgrown it can become an unnecessary expense.

Small single mattresses are a popular option for children's bedrooms because they provide a compact sleeping area without taking up as much floor space as a standard single. A standard single can provide more room and may be a practical long-term option for an older child or teenager.

A small double mattress can also be worth considering if your child's bedroom has enough space and you want to provide additional room for growth, reading or occasional sleepovers.

Mattress365's Kids Bed Buying Guide includes guidance on children's mattress and bed sizes, helping you choose a combination that works for both the child and the available bedroom space.

Small Single

A small single mattress is a useful choice for younger children and compact bedrooms. It offers a narrower sleeping surface than a standard single while still providing a proper bed size for growing children.

Single

A standard single provides more room and is one of the most versatile choices for children's bedrooms. It can remain suitable as a child gets older, potentially reducing the need for an early replacement.

Small Double

A small double provides additional sleeping space and can be useful for older children or teenagers. It is a larger investment initially, so consider the available bedroom space and how long you expect the bed to be used.

Consider the Mattress Type

The construction of a mattress affects its feel, support and price. Fortunately, there are several mattress types that can work well for children without requiring a premium budget.

Open Coil Mattresses

Open coil mattresses are often a budget-friendly choice and can provide a supportive, traditional mattress feel. They are widely available in children's sizes and can be a sensible option when keeping the overall cost down is important.

The simple construction can make open coil mattresses an attractive choice for children's beds, particularly when you are looking for straightforward support without paying for additional comfort technologies.

Memory Foam Mattresses

Memory foam mattresses can provide a more cushioning feel and respond to the body as it moves during sleep. They can be a useful option if your child prefers a softer, more contouring sleeping surface.

There are memory foam options at different price points, so it is worth comparing the overall construction rather than assuming that every memory foam mattress will be expensive.

Hybrid Mattresses

Hybrid mattresses combine spring support with comfort materials such as foam. They can offer a balance between responsiveness and cushioning, although they may cost more than a straightforward open coil mattress.

If you have a little more room in your budget, a hybrid can be worth considering when your priority is combining different mattress technologies in one design.

Latex Mattresses

Latex mattresses are resilient and responsive and can provide a durable sleeping surface. Natural latex products can be more expensive, so if you are shopping on a strict budget, other mattress constructions may offer better value.

What Firmness Is Best for Children?

Firmness is an important consideration when choosing a children's mattress. A mattress should provide suitable support while still being comfortable enough for your child to settle and sleep well.

There is no single firmness level that will suit every child. Mattress365 offers children's mattresses across soft/medium, medium and medium/firm options, allowing you to consider your child's comfort preferences alongside the support they need.

When comparing mattresses, remember that firmness descriptions can vary between manufacturers. Rather than choosing based on the label alone, look at the mattress construction and the manufacturer's description of how it is designed to feel.

Budget tip: Don't automatically choose the firmest mattress because you assume it will last longer. Focus on finding an appropriate balance of support, comfort and construction for your child's needs.

Don't Overlook Mattress Depth

Mattress depth is another practical consideration, particularly when buying a mattress for a child's bed. A thicker mattress is not automatically better, and the correct depth depends on the bed frame and how the mattress will be used.

Slimmer mattresses can be useful for children's beds, bunk beds and other situations where keeping the overall sleeping height lower is important. Mattress365's Mattress Depth Buying Guide explains why depth should be considered alongside the mattress construction, bed frame and overall bed height.

Always check the specifications of the bed frame before ordering a mattress and make sure the mattress is an appropriate size and depth for the intended bed.

Look for Practical Features

When shopping for a child's mattress, practical features can make a big difference to its everyday value. Children can be harder on mattresses than adults, so durability and ease of care are worth considering.

Breathable Materials

Children can become warm during the night, so a mattress with breathable construction can help create a more comfortable sleeping environment. Ventilation and airflow can be useful features to look for when comparing different mattresses.

Hypoallergenic Materials

If allergies are a concern, consider mattresses made with suitable hypoallergenic materials. It is also worth checking whether the mattress cover can be removed or cleaned according to the manufacturer's instructions.

Washable or Protective Covers

A mattress protector can help protect the mattress from spills, stains and everyday accidents. For children's beds, this can be a particularly useful investment because keeping the mattress clean can help extend its useful life.

For more practical advice on looking after your sleep products, visit the Product Care Guides.

How to Get Better Value From a Kids Mattress

Buying an affordable mattress is not just about finding the lowest price. There are several ways to make your budget go further while still choosing a suitable mattress.

  • Choose a mattress size that gives your child room to grow.
  • Compare mattress constructions rather than focusing only on brand names.
  • Consider open coil options if keeping the initial cost low is your priority.
  • Look for practical features such as breathable materials and washable or protective covers.
  • Check the mattress depth and bed compatibility before ordering.
  • Use a suitable mattress protector to help protect the mattress from everyday accidents.
  • Consider the overall lifespan and suitability of the mattress rather than simply choosing the cheapest option.

Affordable Kids Mattresses at Mattress365

Mattress365 currently offers a range of children's mattresses at different price points, making it possible to compare budget-friendly options with more feature-rich designs. The kids mattress range includes open coil, memory foam and hybrid-style options in sizes suited to children's beds.

Affordable options currently include the Sleepsoul Air Mattress from £109.95, the Komfi Unity Comfort Mattress from £114.95 and the Sleepsoul Balance 800 Mattress from £149.95. Prices and stock can change, so check the product page for the latest price and availability.

Rather than assuming that a more expensive mattress is automatically better for your child, compare the size, construction, firmness, materials and practical features to find the option that best matches your requirements.

Looking for an affordable mattress for your child?
Explore the Mattress365 kids mattress range and compare supportive, comfortable options for growing children.

Shop Kids Mattresses

Affordable Mattresses for Kids FAQs

What is the cheapest type of mattress for a child?

Open coil mattresses are often among the more affordable options for children's beds. They can provide straightforward support and are available in a range of children's sizes.

What size mattress should I buy for my child?

This depends on your child's age, size, bedroom space and how long you want the mattress to remain suitable. Small single and single mattresses are common choices for children, while a small double can provide additional room for older children and teenagers.

Is a firm mattress better for children?

Not necessarily. Children need suitable support, but the ideal firmness depends on the individual child and mattress construction. Mattress365 offers children's mattresses across different firmness levels, including soft/medium, medium and medium/firm options.

Are memory foam mattresses suitable for children?

Memory foam can be suitable for children and provides a more cushioning, contouring feel. When choosing one, consider the mattress construction, ventilation, firmness and whether the product is appropriate for the child's bed.

How long should a kids mattress last?

A mattress should be replaced when it is no longer providing suitable support or comfort, has deteriorated significantly or your child has outgrown the size. Children's mattresses can need replacing more frequently than adult mattresses because children grow quickly and their sleeping requirements change.

How can I protect my child's mattress?

A suitable mattress protector can help protect against spills, stains and everyday accidents. Follow the mattress manufacturer's care instructions and use the correct protector for the mattress.

Where can I find more advice about choosing a children's mattress?

Mattress365's Kids Mattress Buying Guide provides more detailed information about children's mattress sizes, materials, support and comfort. You can also browse the wider Help & Advice hub for additional mattress and bed buying guidance.

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