Relyon Ultra Cool Gel 2400 Double Mattress
Relyon

Relyon Ultra Cool Gel 2400 Double Mattress

The Relyon Ultra Cool Gel 2400 is a hybrid mattress, which means it combines springs with comfort layers rather than relying on foam alone.

  • Suits sleepers who run warm
  • Medium-firm feel, easy to move on
  • From a long-established British maker

£1,168.75

Size: Double. Available at Mattress Man

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Where can I buy the Relyon Ultra Cool Gel 2400 Double Mattress?

Below are the best prices for the Relyon Ultra Cool Gel 2400 Mattress in a Double. Available from (9) trusted retailers.

Relyon Ultra Cool Gel 2400 Mattress

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Prices last checked:
11th November 2026

Mattress dimensions for the Relyon Ultra Cool Gel 2400 Double Mattress

Length: 190cm

Width: 135cm

(4ft 6in x 6ft 3in)

Minimum room size: 2.6m x 2.8m

Mattress details

Mattress Details for the Relyon Ultra Cool Gel 2400 Double Mattress

Mattress

Relyon Ultra Cool Gel 2400 Mattress

Size

UK Double (4ft 6in x 6ft 3in)

Firmness

Medium Firm

Construction

  • Pocket Spring

  • Hybrid

  • Gel

Depth (cm)

Layers

Layer Details

Key benefits

Key Benefits of the Relyon Ultra Cool Gel 2400 Double Mattress

  • Sized for real UK bedrooms: We suggest a room of at least 2.6m x 2.8m for the UK double, so it fits many second bedrooms and first flats that a UK king would crowd.
  • Space left for the rest of the room: With around 3m x 3m, you can usually keep a wardrobe, a chest of drawers and a bedside table on each side without the room feeling cramped.
  • A steadier shared surface: The medium firm rating means less sinking in, so each of you is a little less likely to roll towards the middle of the UK double.
  • A sensible guest room choice: If couples stay over now and then, the UK double gives them a shared bed without handing a whole spare room over to the mattress.

Who should buy the Relyon Ultra Cool Gel 2400 Double Mattress?

This size suits you if...

You share the bed with a partner and your bedroom is a typical UK size, or you're kitting out a spare room for visiting couples. It also fits if you sleep alone but like room to stretch, perhaps with a cat or dog curled up at the foot.

Consider another size if...

Your room is smaller than 2.6m x 2.8m, or you and your partner both sprawl. We'd recommend the UK small double for tight rooms (allow 2.4m x 2.8m), or the UK king for extra space (allow 2.7m x 2.9m).

FAQ's

Frequently Asked Questions About the UK Double

Can I fit bedside tables either side of a UK double Relyon Ultra Cool Gel 2400?

In most rooms, yes. We suggest at least 2.6m x 2.8m for a UK double, but that is a minimum. If you want a bedside table on each side plus a wardrobe, around 3m x 3m is more comfortable, so measure the wall the headboard will sit against before you buy.

How much space does each person get on the Relyon Ultra Cool Gel 2400 UK double?

Two people sharing get 67.5cm each. That suits most couples, although if either of you sleeps starfished it can feel snug. The medium firm surface means less sinking in, which helps you stay on your own side slightly more easily than on a softer mattress.

Is the Relyon Ultra Cool Gel 2400 UK double long enough if I'm tall?

The UK double is 190cm long. If your feet already reach the end of your current bed, the UK king is 10cm longer as well as 15cm wider, though we suggest a room of at least 2.7m x 2.9m for the UK king.

Relyon Ultra Cool Gel 2400 double or small double for a guest room?

The UK double is 15cm wider than the UK small double and the same length. If couples stay regularly, the extra width makes sharing easier. If the spare room is tight, the UK small double needs at least 2.4m x 2.8m, against 2.6m x 2.8m for the UK double.

What are the Relyon Ultra Cool Gel 2400 UK double dimensions in feet?

The UK double measures 4ft 6in x 6ft 3in, which is 135 x 190cm. That is the standard UK double footprint, so a standard UK double bed frame and double fitted sheets should fit. Check your frame's internal measurements before ordering if it is an older or unusual design.