Kids Mattresses

King Single Mattress

Single Mattress

Single Bed Frames

King Single Bed Frames

Bunk Beds

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Shop Affordable Kids Mattresses

Finding cheap kids mattresses that support growing bodies comes down to choosing the right construction and firmness for your child's size and sleeping style. At Factory Buys, our range of cheap kids mattresses includes pocket springs, memory foam, cool gel, and pillow top options in single and king single sizing, all designed to fit standard Australian bed frames. With firmness levels ranging from medium through to firm, you can match the mattress to what your child needs now and for the years ahead. Trusted by Australian families on Trustpilot, Factory Buys makes quality sleep easy to afford. Browse our kids bed frames to pair with a new mattress, or check kids bedroom packages to set up the full room.

Mattress Types Worth Knowing About

Kids mattresses come in several constructions, and each one has a different feel and support profile. Pocket spring mattresses are a popular choice for children because the springs move independently, offering consistent support across the sleeping surface and reducing motion transfer. They suit a wide range of sleeping positions and are a reliable all-round option for most kids. Memory foam and cool gel options are worth considering for children who sleep warm or who benefit from a mattress that contours more closely to their shape. Cool gel layers help with temperature regulation, which can make a practical difference through the warmer months. Pillow top spring mattresses offer an extra layer of cushioning at the surface, suiting children who prefer a softer feel without losing the support underneath. Browse our full range of pocket spring mattresses or explore memory foam mattresses to compare construction types.

Single and King Single: Getting the Size Right

The kids mattresses in this collection come in single and king single, and the right choice depends on the size of the room and how much growing room your child needs. A single mattress is the standard starting point for younger children and fits neatly in smaller bedrooms without using up floor space. A king single is the better long-term investment for older children and tweens who are growing quickly or who want more room to stretch out during the night. Both sizes are designed to fit standard Australian bed frames, so pairing with an existing frame is straightforward once you've confirmed the size. For a closer look at what's available, browse single mattresses and king single mattresses to compare options side by side.

Firmness and Thickness: What to Look For

Firmness is one of the more important decisions when choosing a mattress for kids, and it's worth getting right from the start. Medium and medium soft options tend to suit younger and lighter children, offering a balance of comfort and support without being too hard for smaller frames. Medium firm and firm mattresses are generally better suited to older kids and heavier sleepers, providing more resistance and helping keep the spine properly aligned through the night. Thickness is a secondary consideration but still worth checking, particularly if the bed base has specific height requirements or if a fitted sheet size is already on hand. The mattresses in this collection span multiple thickness profiles, so reviewing the product page details before buying is the best way to confirm compatibility. For options by feel, take a look at firm mattresses or medium firm mattresses to narrow things down.

Putting the Rest of the Room Together

A well-chosen kids mattress makes a real difference to how well a child sleeps, but the rest of the bedroom setup matters too. If a second sleeping space is needed for siblings or regular sleepovers, kids bunk beds are a practical option worth considering alongside a standalone mattress and frame. For younger children or those in elevated beds, kids safety bed rails are worth factoring into the setup from the beginning. Pairing the mattress with the right frame, linen, and storage from the start keeps the room functional and reduces the need to go back and replace pieces as the child grows. Planning the full bedroom layout as a single project rather than buying piece by piece tends to give a better result overall.

How do I choose the right kids mattress firmness for my child?

Aim for supportive comfort rather than very soft. A medium feel is often a safe starting point for growing bodies, but the best choice depends on your child’s weight and sleeping position. Check the product listing for firmness guidance and support notes, and prioritise a stable feel that keeps them well aligned.

What mattress size fits my child’s bed frame properly?

Match the mattress size to the bed frame size listed for your child’s bed. Don’t guess based on what “looks right”. Measure the internal space of the frame if you’re unsure, then compare it to the mattress dimensions on the product page. A proper fit helps with comfort, safety, and bedding compatibility.

Should I choose pocket spring or foam for kids mattresses?

Pocket spring can feel bouncier with good airflow, while foam can feel more cushioning and may reduce movement. The right pick depends on what your child finds comfortable and how warm they sleep. Check the listing for mattress height, support layers, and recommended base type to ensure it suits your bed frame.

Does a kids mattress arrive rolled, and how do I set it up?

Some kids mattresses arrive rolled and boxed, while others are delivered full size, so it is worth checking the product listing before ordering. If your mattress arrives rolled, place it on the bed base, carefully unwrap it, and allow time for it to expand fully before use. Keeping the room ventilated can also help any new-mattress smell fade more quickly.

What should I know about dispatch, delivery, warranty, and support?

All orders are dispatched from our warehouse within 1 to 2 business days. Delivery typically takes 1 to 12 business days, depending on your location and the courier. All products include a 12 month warranty, and our Customer Support team is available 8 am to 8 pm, 7 days per week. If you need help at any stage, visit our Contact Us page and include your order number plus a short description so we can assist sooner.