Create a mattress around your bed, your comfort preference and the way you sleep. MattressBox Make Your Own Mattress lets you choose a standard mattress size or enter custom dimensions, then personalise the support layer, comfort layer, thickness and finish.

This is designed for customers who cannot find the right fit in a standard single, double, queen, king or super king mattress, as well as anyone who wants more control over how the mattress feels. Choose from the available foam, latex, spring and memory-foam options shown in the configurator and build a custom size mattress directly online.

Start with your bed dimensions, choose the support construction, add the comfort layer you prefer, select the required thickness and finish, and review the live subtotal before checkout.

Build a Mattress That Fits Your Bed

Standard bed sizes do not always match every cot, platform bed, antique bed frame or custom-made bed. MattressBox lets you enter a custom length and breadth within the limits available in the configurator, or choose from standard single, double, queen, king and super king options.

1. Choose Your Mattress Size

Measure the inside sleeping area of your bed and select the closest standard size or enter the custom dimensions supported by the configurator. The current custom-size controls allow length and breadth selections within the ranges shown on the live page.

2. Choose the Support Layer

Select the base construction available in the configurator. MattressBox currently presents foam, latex and spring options for the support/base layer, with thickness choices shown during configuration.

3. Choose the Comfort Layer

Add the top comfort feel you prefer. Available options shown on the page include foam, latex, memory foam or no additional comfort layer, with selectable thickness where applicable.

4. Select Mattress Thickness

Choose the available thickness that suits your bed height, body-support preference and selected layer combination. The final price updates according to the configuration.

5. Choose the Finish

Complete your personalised mattress with the available finish option displayed in the configurator, then review the configured mattress and live total before adding it to cart.

Why Choose a Custom Size Mattress?

• Fits non-standard or custom-made bed frames.
• Lets you choose the mattress dimensions instead of adapting the bed to a fixed mattress.
• Lets you select the support and comfort materials shown in the configurator.
• Allows different thickness and comfort combinations.
• Useful when standard single, double, queen, king or super king dimensions are not the right fit.