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How to Join Zip-and-Link Mattresses

By , Editor Updated First published

Desk research from official sources. Not a product test or medical advice. How we check facts.

In short

Zip-and-link systems join two matching mattresses with a zip or linking strip. A Super King set is usually two 90 × 200 cm halves. Place both on a flat joined base. Align the zip edges and close the zip fully. Then add any bridge cover or topper. Do not force a zip past fabric catches.

About 1 minutes to read

How it works

Three-step diagram: two matching 90 × 200 cm halves, the long edges zipped together, then a bridge cover laid over the join to make a 180 × 200 cm Super King
Align the zip edges on a flat base, then close the zip. A bridge cover softens the centre line.

Steps

  1. Assemble and level the base first.
  2. Place mattress one, then mattress two, zip edges together.
  3. Match head ends (labels or pillow tags the same way).
  4. Close the zip or fit link clips.
  5. Add a bridge cover or continuous topper if you want less centre feel.
  6. Fit sheets sized for the joined footprint (often Super King).

Tips

  • Different spring tensions can sit side by side — that is a main reason to use zip-and-link.
  • Do not drag zips across grit; vacuum the edges first.
  • For definitions see zip-and-link and couples guide.

Frequently asked questions

How do I zip two mattresses together?

Lay both mattresses on the finished base with zip edges touching. Start the zip at the head or foot as the maker marks. Close it fully along the length. Smooth any fabric fold before you force the slider.

Do I need a special base for zip-and-link?

You need a base the full joined width, often two linked halves. Dual adjustable bases need a split surface. See couples and zip-and-link for why people choose different tensions.