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Upgrade your sleep for less this February - Trade in your old bed today & save up to £1,500💥 | Upgrade your sleep for less this February - Trade in your old bed today & save up to £1,500💥 | Upgrade your sleep for less this February - Trade in your old bed today & save up to £1,500💥
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: —

77 products

  • Duke Ortho Mattress - Double

    Duke Ortho Mattress – Double

    £282
    Order Now and Get by February 20, 2026
  • Duke Comfort Mattress - Double

    Duke Comfort Mattress – Double

    £282
    Order Now and Get by February 20, 2026
  • Midnight Mattress - Double

    Midnight Mattress – Double

    £948 Original price was: £948.£379Current price is: £379.20.
  • Pearl Mattress - Double

    Pearl Mattress – Double

    £1008 Original price was: £1008.£403Current price is: £403.20.
    Order Now and Get by February 20, 2026
  • Midnight Mattress - King

    Midnight Mattress – King

    £1140 Original price was: £1140.£456Current price is: £456.
  • Ivory Mattress - Double

    Ivory Mattress – Double

    £1188 Original price was: £1188.£475Current price is: £475.20.
    Order Now and Get by February 20, 2026
  • Classic Essential 1000 Mattress - Double

    Classic Essential 1000 Mattress – Double

    £500
  • Amethyst Mattress - Double

    Amethyst Mattress – Double

    £1035 Original price was: £1035.£518Current price is: £517.50.
  • Cosy Siesta Mattress - Double

    Cosy Siesta Mattress – Double

    £520
  • Snooze Easy Mattress - Double

    Snooze Easy Mattress – Double

    £525
  • Citrine Mattress - Double

    Citrine Mattress – Double

    £1080 Original price was: £1080.£540Current price is: £540.
  • Classic Pocket 1000 Mattress - Double

    Classic Pocket 1000 Mattress – Double

    £575
  • Classic Cashmere 1000 Mattress - Double

    Classic Cashmere 1000 Mattress – Double

    £600
    Order Now and Get by February 20, 2026
  • Classic Cool 1000 Mattress - Double

    Classic Cool 1000 Mattress – Double

    £600
  • Snooze Rest Mattress - Double

    Snooze Rest Mattress – Double

    £640
  • Ironstone Mattress - Double

    Ironstone Mattress – Double

    £1300 Original price was: £1300.£650Current price is: £649.99.
  • Zircon Mattress - Double

    Zircon Mattress – Double

    £985 Original price was: £985.£690Current price is: £689.50.
  • Amber Mattress

    Amber Mattress

    From £710
    Order Now and Get by March 3, 2026
  • Snooze Calm Mattress - Double

    Snooze Calm Mattress – Double

    £720
  • Rosaline Mattress - Double

    Rosaline Mattress – Double

    £1010 Original price was: £1010.£808Current price is: £808.01.
  • Emerald Mattress - Double

    Emerald Mattress – Double

    £1135 Original price was: £1135.£908Current price is: £907.99.
  • Amber Mattress - Double

    Amber Mattress – Double

    £945
  • Lolite Mattress

    Lolite Mattress

    From £980
    Order Now and Get by March 3, 2026
  • Nova Balance Mattress - Double

    Nova Balance Mattress – Double

    £987
  • Amatrix Mattress - Double

    Amatrix Mattress – Double

    £1480 Original price was: £1480.£1036Current price is: £1036.
  • Nectus Pure Support Mattress

    Nectus Pure Support Mattress

    From £1070
    Order Now and Get by March 17, 2026
  • Gel Essence Comfort Mattress - Double

    Gel Essence Comfort Mattress – Double

    £1083
    Order Now and Get by February 20, 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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