How to Choose a Mattress: Size, Feel & Bed Base

Choosing a mattress starts with three practical questions: will it fit your bed, does its described feel suit your preferences, and can your base support it correctly? Thickness, spring counts and material names only tell part of the story.

This mattress buying guide helps you compare the details in our mattresses collection before ordering. Features and availability vary by model.

1. Confirm the Size and Finished Bed Height

Measure your bed’s mattress space and check the exact dimensions in both the frame and mattress listings. Size names can differ between manufacturers and countries.

Common Australian sizes include Queen at approximately 153cm by 203cm and King at approximately 183cm by 203cm. Use these as a starting point, then confirm the measurements for the specific products.

Check mattress thickness as well as width and length. Add that thickness to the height of the support surface to estimate your finished sleeping height. Consider getting into bed, the position of bedside tables and whether your fitted sheets will fit.

2. Compare Firmness with Your Own Preferences

Think about what you like and dislike about your current mattress: the surface feel, ease of turning, room to move and comfort when sharing. These observations are more useful than choosing solely from a label.

Descriptions such as plush, medium and firm are not a universal scale across brands. Your experience can also depend on your body, sleeping position and the base beneath the mattress.

Comfort cannot be guaranteed from a photograph or product name. Terms such as “orthopaedic” should not be treated as a promise to prevent or treat pain.

3. Look Beyond the Material Name

Read the actual layer and support-system description. A mattress described as memory foam may combine foam comfort layers with a spring core; a gel layer does not describe the whole construction.

For spring models, compare the spring system, comfort layers and edge construction where these are specified. A spring count alone does not establish comfort or overall quality.

If motion transfer, temperature or material sensitivities matter to you, look for specific information for that model. Do not assume every foam mattress sleeps the same way or that a cooling label guarantees a particular overnight temperature.

4. Check Compatibility with Your Bed Base

Follow the mattress manufacturer’s requirements for base construction, slat spacing and centre support. Check any stated capacity and how it is defined for both the mattress and frame.

An adjustable base needs a mattress expressly suitable for that use. Do not assume a mattress will bend safely simply because it contains foam.

For bunk beds, check the bed manufacturer’s permitted mattress dimensions and maximum thickness, along with all guardrail and safety instructions. This guide concerns general bed mattresses, not cot or infant sleep products.

5. Plan Delivery, Unpacking and Care

Check the packaged dimensions and weight against doorways, stairs and your ability to move the carton. Arrange suitable help when required.

If the mattress arrives compressed, follow its own unpacking instructions, including any time limit for opening the package and the recommended expansion period. These times vary; do not rely on a general rule.

Read the care instructions before choosing a protector or cleaning method. Check whether rotation is recommended and whether the design permits flipping. Confirm the stated warranty and return terms; do not assume a sleep trial or change-of-mind return after use is included.

6. Your Mattress Buying Checklist

  • Exact mattress dimensions match the bed frame.
  • Thickness and finished sleeping height suit your room and bedding.
  • Firmness and construction details are clear.
  • The base meets the manufacturer’s support requirements.
  • Delivery access, unpacking, care and purchase terms have been checked.

Browse our mattresses, read the delivery policy, or contact us if a size or compatibility detail needs clarification.

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