Alexander & Cole Tranquillity Pocket 11800 6ft Super King Size Mattress


Product Features


    Supporting and contouring your body shape, it’s ideal for those who switch from sleeping on their side, to sleeping on their back

    Pocket Springs

    Pocket springs are individual independent springs that contour to your bodyshape and minimise partner disturbance

    Natural Fillings

    Natural fillings such as wool, cotton, cashmere and silk help to regulate body temperature during summer and winter

    Hand Side Stitched Border

    A highly skilled process that sews outer rows of springs to the mattress border ensuring consistent support across the mattress

    Hand Tufted

    Especially important for extra deep mattresses, tufting ensures the fillings are held securely in place, thus increasing the life of the mattress

    Viscose Cover

    A premium fabric that is soft to the touch, breathable and renowned for its attractive silk-like lustre

    Double Sided Mattress

    Can be flipped and rotated. Sleeping on both sides will ensure wear and tear is evenly distributed

    10 Year Enhanced Warranty

    In addition to a 5 year guarantee, this mattress has a further 5 years manufacturing warranty for complete peace of mind

    Turning Handles

    Reinforced handles are stitched to the mattress border to help you flip and rotate your mattress

Product Description

Hand made by master craftsmen, the Tranquillity 11800 is exclusive to Archers and boasts a blend of pocket and mini tablet springs and natural fillings.

Substantially filled at 37cm deep, this luxurious mattress is upholstered in a premium Belgian viscose fabric and features a hand tufted finish.

Natural wool, cotton, silk and cashmere offer enhanced comfort and with 8kg per square metre, you’re getting a mattress that’s a cut above the rest.

Sandwiched between these deep layers is its pocket spring interior, supplied by Agro, Europe’s biggest manufacturer of mattress spring systems.

The unique interior is made up of an inner core of 1000 pocket spring, with 5400 mini tablet spring on both side for added comfort and support.

Housed in cloth sleeves, the springs are free of any neighbouring coils and only compress where pressure is applied for body-contouring support.

Reserved for top-end mattresses, its side-stitching is performed by highly-trained staff. It’s a labour intensive and intricate technique to master.

This process is applied using a long upholstery needle and high tension twine that’s used to sew the border to the turns in the perimeter springs.

This traditional method strengthens the edge of the mattress and offers edge-to-edge support.  

Delivery Info

Day of Choice 1 Man: FREE (online exclusive)

A one man service to the ground floor door of your building. You may need assistance to bring the goods into your house.
Saturday delivery: £20

Room of Choice 2 Man: £39

A two man service to the room of your choice with a 3hr time slot.
All assembled furniture requires the 2 man service.

Scottish Islands*, N Ireland and IoM Delivery: £89

Up to 3 weeks longer than a mainland delivery. Phone us for arrangements for your specific location.

* Scottish Islands includes a few remote mainland locations


Local to one of our stores

  • Divan base, mattress and headboard: £15
  • Bed frame: £25 (excluding bed frames with storage)
  • Electric adjustable beds: £15 per unit (5ft and 6ft: £30)
  • Flat packed furniture: contact local store

Rest of mainland UK excluding remote locations

  • Divan base, mattress and headboard: £30
  • Bed frame: n/a
  • Electric adjustable beds: £50 (all sizes)
  • Flat packed furniture: n/a


Local to one of our stores

  • Mattress: £25
  • Divan base: £25
  • Bed frame: £25
  • Divan base and mattress: £35
  • Divan base, mattress and headboard: £35
  • Bed frame and mattress: £35
  • Electric adjustable beds: £35 per unit (5ft and 6ft: £70)

Rest of mainland UK excluding remote locations

  • Mattress: £50
  • Divan base: £50
  • Bed frame: n/a
  • Divan base and mattress: £65
  • Divan base, mattress and headboard: £70
  • Electric adjustable beds: n/a

Failed Delivery Charge: £15

Our delivery times are between 8am and 6pm and someone must be present to sign for the goods.


Check all packaging is in good order. If the packaging is damaged still accept the goods but state on the paperwork "packaging damaged". If there is damage we will have the item replaced and the damaged item uplifted.

Late Delivery

We offer no compensation for loss of earnings, storage of goods or other costs incurred due to late delivery.

£2,639.99 £3,299.99
FREE delivery 2 to 3 weeks
Pocket Springs
Natural Fillings
37CMMattress Depth
L200cm x W180cm x D37cm
Other available sizesAvailable to view in store