Article

How Custom Mattresses Are Manufactured

Quick answer

A custom mattress is built from an approved specification: layers are cut to size, assembled in order, covered, checked against the specification and packed. Quality depends on the specification and the checks.

By Sleepwit Sleep Team · Updated 2026-10-31 · 1 min read · Part of the Custom size mattress guide

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Key points

  • Specification. Your measurements, layers, firmness and cover become a job card with a version number.
  • Cutting and assembly. Foam, latex or spring units are cut or built to size, layers are bonded in order and the cover is cut and stitched to fit.
  • Checks and packing. Dimensions, thickness, layer order and stitching are checked against the job card; the mattress is then wrapped or compressed for delivery where the build allows.

Specification

Your measurements, layers, firmness and cover become a job card with a version number.

Cutting and assembly

Foam, latex or spring units are cut or built to size, layers are bonded in order and the cover is cut and stitched to fit.

Checks and packing

Dimensions, thickness, layer order and stitching are checked against the job card; the mattress is then wrapped or compressed for delivery where the build allows.

Frequently asked questions

How long does it take?

It depends on the build and the factory; we confirm in your quote.

Who checks quality?

The factory carries out checks, and Sleepwit confirms the specification.

Keep reading

This article is general information, not medical advice. If you have persistent pain or sleep problems, please speak to a doctor.

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