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Home › Double Mattresses - 4ft 6 Mattresses

Double Mattresses - 4ft 6 Mattresses

Our double mattresses measure 4ft 6 inches wide and 6ft 3 inches long or 135cm by 190cm. 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: —

73 products

  • Duke Ortho Mattress - Double

    Duke Ortho Mattress – Double

    £282 Original price was: £282.£226Current price is: £225.60.
    Order Now and Get by March 17, 2026
  • Duke Comfort Mattress - Double

    Duke Comfort Mattress – Double

    £282 Original price was: £282.£226Current price is: £225.60.
    Order Now and Get by March 17, 2026
  • Pearl Mattress - Double

    Pearl Mattress – Double

    £1008 Original price was: £1008.£302Current price is: £302.40.
    Order Now and Get by March 17, 2026
  • Ivory Mattress - Double

    Ivory Mattress – Double

    £1188 Original price was: £1188.£356Current price is: £356.40.
  • Midnight Mattress - Double

    Midnight Mattress – Double

    £948 Original price was: £948.£379Current price is: £379.20.
  • Classic Essential 1000 Mattress - Double

    Classic Essential 1000 Mattress – Double

    £500 Original price was: £500.£400Current price is: £400.01.
  • Cosy Siesta Mattress - Double

    Cosy Siesta Mattress – Double

    £520 Original price was: £520.£416Current price is: £415.99.
  • Snooze Easy Mattress - Double

    Snooze Easy Mattress – Double

    £525 Original price was: £525.£420Current price is: £420.
  • Midnight Mattress - King

    Midnight Mattress – King

    £1140 Original price was: £1140.£456Current price is: £456.
  • Classic Pocket 1000 Mattress - Double

    Classic Pocket 1000 Mattress – Double

    £575 Original price was: £575.£460Current price is: £460.01.
  • Classic Cashmere 1000 Mattress - Double

    Classic Cashmere 1000 Mattress – Double

    £600 Original price was: £600.£480Current price is: £480.
    Order Now and Get by March 17, 2026
  • Classic Cool 1000 Mattress - Double

    Classic Cool 1000 Mattress – Double

    £600 Original price was: £600.£480Current price is: £480.
  • Zircon Mattress - Double

    Zircon Mattress – Double

    £985 Original price was: £985.£493Current price is: £492.50.
  • Snooze Rest Mattress - Double

    Snooze Rest Mattress – Double

    £640 Original price was: £640.£512Current price is: £511.99.
  • Snooze Calm Mattress - Double

    Snooze Calm Mattress – Double

    £720 Original price was: £720.£576Current price is: £576.
  • Burley Mattress - Double

    Burley Mattress – Double

    £1170 Original price was: £1170.£585Current price is: £585.
  • Rosaline Mattress - Double

    Rosaline Mattress – Double

    £1010 Original price was: £1010.£707Current price is: £707.
  • Amatrix Mattress - Double

    Amatrix Mattress – Double

    £1480 Original price was: £1480.£740Current price is: £739.99.
  • Nova Balance Mattress - Double

    Nova Balance Mattress – Double

    £987 Original price was: £987.£740Current price is: £740.26.
  • Ebony Natural Mattress - Double

    Ebony Natural Mattress – Double

    £1500 Original price was: £1500.£750Current price is: £750.
  • Jet Memory Mattress - Double

    Jet Memory Mattress – Double

    £1500 Original price was: £1500.£750Current price is: £750.
    Order Now and Get by March 17, 2026
  • Amber Mattress - Double

    Amber Mattress – Double

    £945 Original price was: £945.£756Current price is: £756.
  • Emerald Mattress - Double

    Emerald Mattress – Double

    £1135 Original price was: £1135.£795Current price is: £794.50.
  • Nova Comfort Mattress - Double

    Nova Comfort Mattress – Double

    £1089 Original price was: £1089.£817Current price is: £816.76.
  • Nova Soothe Mattress - Double

    Nova Soothe Mattress – Double

    £1089 Original price was: £1089.£817Current price is: £816.76.
  • Nova Ortho Mattress - Double

    Nova Ortho Mattress – Double

    £1155 Original price was: £1155.£866Current price is: £866.26.
  • Gel Essence Comfort Mattress - Double

    Gel Essence Comfort Mattress – Double

    £1083 Original price was: £1083.£866Current price is: £866.40.
    Order Now and Get by March 17, 2026

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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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