Small Double Mattresses

Small double mattresses are a great choice for bedrooms that need more space than a single mattress can offer but cannot fit a full double. A small double mattress measures 4ft wide and provides comfortable sleeping space for one person and occasional space for two. This size works well in compact master bedrooms, guest rooms and shared spaces.

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The Right Fit, The Right Support

Small Double Mattresses for Compact Beds

Small double mattresses are built to the same standard as the rest of our range, with memory foam, pocket sprung and orthopaedic options available. A practical choice for box rooms, teenage bedrooms and compact spare rooms.

Whatever style you choose, you'll get a mattress made with quality materials designed to support you properly night after night. Small double mattresses fit standard small double bed frames and divan bases without the bulk of a full double.

Pair with a matching small double bed frame for a space efficient bedroom set without sacrificing comfort.

Have questions?

Frequently asked questions

Everything you need to know before you order.

  • A UK small double mattress measures 120cm wide by 190cm long. This is wider than a single (90cm) but narrower than a standard double (135cm). Always use small double-specific bedding rather than standard double, as double fitted sheets will be too wide and will not sit properly.

  • Yes — a small double is a great choice for a solo adult who finds a single too narrow. The additional 30cm of width makes a meaningful difference to sleeping comfort, especially for those who move around during the night. It also works well in a studio flat or smaller room where a full double might feel too large.

  • Yes — we offer small double mattresses across memory foam, pocket sprung, orthopaedic, and hybrid constructions, as well as gel, pillow top, and open coil options. Simply filter the mattress collections by 'Small Double' to see all available options.

  • Small double bedding (120cm) is a standard UK size and readily available from most bedding retailers. However, the range is not as wide as standard double or king size, so it's worth checking bedding availability before committing to a small double if you have specific bedding preferences.

  • No — the firmness and construction of a mattress is the same regardless of size. A small double version of a given mattress will feel identical in comfort and support to the king or double version. The only difference is the physical dimensions.