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Up to 30% extra discount at checkout when you purchase today | Up to 30% extra discount at checkout when you purchase today | Up to 30% extra discount at checkout when you purchase today
Home › Double Mattresses - 4ft 6 Mattresses

Double Mattresses - 4ft 6 Mattresses

Our double mattresses measure 4ft 6 inches wide and 6ft 3 inches long. Their size makes them ideal for couples sharing a bed in a double bedroom, leaving plenty of space to get comfortable. We offer a wide variety of double mattresses, from memory foam double mattresses to pocket sprung double mattresses and more. We also offer a range of small double mattresses for those in need of a slightly narrower mattress. Browse our full range of 4ft 6 mattresses below.

  • Price: —

59 products

  • Nova Soothe Mattress

    Nova Soothe Mattress

    From £0
  • Duke Ortho Mattress

    Duke Ortho Mattress

    From £198
    Order Now and Get by July 5, 2025
  • Duke Comfort Mattress

    Duke Comfort Mattress

    From £198
    Order Now and Get by July 5, 2025
  • Midnight Mattress

    Midnight Mattress

    From £948 Original price was: £948.£284Current price is: £284.40.
    Order Now and Get by July 5, 2025
  • Cosy Siesta Mattress

    Cosy Siesta Mattress

    From £365
    Order Now and Get by July 16, 2025
  • Classic Essential 1000 Mattress

    Classic Essential 1000 Mattress

    From £380
    Order Now and Get by July 16, 2025
  • Classic Pocket 1000 Mattress

    Classic Pocket 1000 Mattress

    From £430
    Order Now and Get by July 16, 2025
  • Snooze Calm Mattress

    Snooze Calm Mattress

    From £435
    Order Now and Get by July 30, 2025
  • Snooze Rest Mattress

    Snooze Rest Mattress

    From £450
    Order Now and Get by July 30, 2025
  • Classic Cashmere 1000 Mattress

    Classic Cashmere 1000 Mattress

    From £450
    Order Now and Get by July 16, 2025
  • Snooze Easy Mattress

    Snooze Easy Mattress

    From £460
    Order Now and Get by July 30, 2025
  • Zircon Mattress

    Zircon Mattress

    From £670 Original price was: £670.£469Current price is: £469.
    Order Now and Get by July 16, 2025
  • Classic Cool 1000 Mattress

    Classic Cool 1000 Mattress

    From £475
    Order Now and Get by July 16, 2025
  • Amethyst Mattress

    Amethyst Mattress

    From £720 Original price was: £720.£504Current price is: £504.
    Order Now and Get by July 16, 2025
  • Rosaline Mattress

    Rosaline Mattress

    From £720 Original price was: £720.£504Current price is: £504.
    Order Now and Get by July 16, 2025
  • Citrine Mattress

    Citrine Mattress

    From £770 Original price was: £770.£539Current price is: £539.
    Order Now and Get by July 16, 2025
  • Gel Essence Comfort Mattress

    Gel Essence Comfort Mattress

    From £591
    Order Now and Get by July 5, 2025
  • Ironstone Mattress

    Ironstone Mattress

    From £875 Original price was: £875.£613Current price is: £612.50.
    Order Now and Get by July 16, 2025
  • Gel Essence Ortho Mattress

    Gel Essence Ortho Mattress

    From £615
    Order Now and Get by July 5, 2025
  • Emerald Mattress

    Emerald Mattress

    From £900 Original price was: £900.£630Current price is: £630.
    Order Now and Get by July 16, 2025
  • Morion Mattress

    Morion Mattress

    From £925 Original price was: £925.£648Current price is: £647.50.
    Order Now and Get by July 16, 2025
  • Burley Mattress

    Burley Mattress

    From £935 Original price was: £935.£655Current price is: £654.50.
    Order Now and Get by July 16, 2025
  • Nova Comfort Mattress

    Nova Comfort Mattress

    From £846 Original price was: £846.£677Current price is: £676.80.
  • Amatrix Mattress

    Amatrix Mattress

    From £1005 Original price was: £1005.£704Current price is: £703.50.
    Order Now and Get by July 16, 2025

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What size is a double mattress?

A double mattress measures 4 feet 6 inches wide (135cm) and 6 feet 3 inches long (190cm). They are designed to sleep two people comfortably, but can also be used by individuals who are looking to stretch out a bit more in bed. Our double mattresses come in a variety of different depths and weights depending on the type of mattress you choose.

Are all double mattresses the same size?

The length and width of a double mattress is consistent across all brands / types of double mattress, however the depth of the mattress may differ. It is also possible to purchase a small double mattress which is slightly narrower as 4ft wide compared to a double mattress being 4ft 6 wide.

Will a double mattress fit a small double bed?

While a double mattress will fit on a small double bed frame or divan, the mattress will stick out by 3 inches each side of the frame as a double mattress is 6 inches wider than a small double mattress / bed. For the ultimate comfort, it is recommended that you use the correct bed size with your chosen mattress.

How many springs should a double mattress have?

The number of pocket springs used in a pocket sprung double mattress will vary depending on the brand, quality and design of the mattress, however it is recommended that double mattresses have a bare minimum of 600 pocket springs. All of our pocket sprung double mattresses contain a minimum of 1,000 pocket springs, with our higher end ranges containing up to 35,000 pocket springs.

How much does a double mattress cost?

The price of your double mattress will vary depending on the comfort level, quality, materials used and more. At Sussex Beds, our double mattresses start at around £229.99.

Buy 4ft 6 mattresses and more with Sussex Beds

Browse our full range of double mattresses online or check out our double divan beds and double divan bases. UK delivery, assembly service and disposal of existing furniture services available.

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Sussex Beds

Sussex Beds™ is a true independent family business and this is immediately obvious with its warm welcome & relaxed shopping experience. Our team are fully trained to guide you in finding a quality bed that meets your specific needs.

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