Save up to 70% Off + FREE Delivery! Learn more

Get 2 FREE pillows when you buy any mattress. Learn more

Posture Flex Chelsea Pocket 1200 Encapsulated Mattress

£399.99 £799.99


Add Service

Rated Excellent

♻️ Old mattress removal & recycle add to checkout.

Reasons to Buy

Free 60 Night Comfort Sleep Trial

Try this mattress risk-free for 60 nights. Love it or exchange it — your comfort is guaranteed!

2 Free Pillows

Get 2 FREE Luxury Pillows! Cradle your head and neck with breathable, hypoallergenic cover and hollow fibres, offering cool, gentle support for all sleep positions.

Pocket Springs

Individually encased springs in fabric pockets, expertly adjusting to your movements to provide tailored support for every part of your body.

Memory foam

Memory foam contours to your unique shape, providing a cushioned feel. Its luxurious texture enhances comfort, ensuring a cozy and restful sleep.

Medium comfort

Just the right balance — neither too soft nor too firm.

Hypoallergenic

Allergy-free for a purer, healthier sleep. Made without allergenic materials, it allows you to rest peacefully without worrying about allergies or respiratory concerns.

Lower back support

Designed to provide essential support for the lower back, this feature helps maintain proper posture and reduces strain, ensuring comfort and relief during extended periods of sitting or resting. Ideal for chairs, mattresses, and ergonomic seating solutions.

Pressure relief

Engineered for optimal comfort, this design offers targeted pressure relief by evenly distributing weight and reducing stress on key areas, promoting a more restful and comfortable experience.

Micro-quilted

A soft, durable fabric with fine stitching for extra comfort and a sleek look. This creates a smooth flat surface.

Tencel Cover

A breathable, moisture-wicking fabric that is soft and silky to touch, providing a comfortable and luxurious sleeping surface, whilst helping to regulate body temperature.

Description

Designed for a restful night’s sleep, the Chelsea mattress features 1200 individually encased pocket springs (king size) that respond to your body’s movements, providing tailored support and reducing pressure points. A layer of soft memory foam enhances comfort, contouring to your body for a weightless feel.

The Tencel knitted cover adds a touch of luxury, offering a breathable, hypoallergenic, and antibacterial sleeping surface that efficiently absorbs moisture. Integrated air vents promote airflow, keeping the mattress fresh. With a non-turn design, maintenance is effortless simply rotate for lasting performance.


Features:

  • Type of Mattress: 1200 Pocket Sprung Encapsulated, Tape edged for extra side supports.
  • Mattress Depth: 25cm (5cm Soft Memory foam / 2.5cm Soft Foam)
  • Mattress Support: Medium
  • Mattress Fabric: Deep Quilted Hypoallergenic Tencel sleeping surface fabric
  • Non Turn – must regularly rotate
  • Flag stitch handles – Easy to carry and move
  • Guarantee: 1 year


All of our mattresses comply to UK Fire Flammability standards.

Mattress fabric shown in the photo can change due to availability and trend shifts in the market place.

Reviews (0)

Dimensions

SIZE WIDTH LENGTH DEPTH
Single 90cm 190cm 29cm
Small Double 120cm 190cm 29cm
Double 135cm 190cm 29cm
King Size 150cm 200cm 29cm
Superking 180cm 200cm 29cm
Superking Zip and Link 180cm 200cm 29cm


Please allow for a tolerance of +/- 2cm

Delivery

Third party independent couriers (weekdays)                                            

Order before 4pm Mon-Thu or 2pm Sat

          FREE 

Weekday delivery

Order up to 60 days ahead

          FREE

Weekend

On Saturday or Sunday 

          FREE

 

 

Delivery to the front door of your building                                                                        

Free upgrade for Double, King Size and Superking to your room of choice

Yes     

Four-hour delivery time slot

We’ll let you know on the day before your delivery

Yes

Call to let you know we’re on our way

On your delivery day (30 mins prior)

Yes


Delivery to your room of choice                                                                                       

Free upgrade for Double, King Size and Superking

£20.00

Mattress recycling

We'll take away your old mattress

£39.99


Delivery is on an all-day service, 7am - 8pm for mainland England and most of Scotland, Wales and Northern Ireland.

Need further information? Please visit our delivery page.

60-Night Comfort Trial

This mattress comes with a free 60-night comfort trial, just like all of our mattresses.

We encourage you to sleep on your new mattress for at least 30 nights, as it can take time for your body to adjust. If, after 30 nights, it’s not feeling quite right, simply get in touch — we’ll be happy to swap it for you.

Still not in love by night 60? No worries. The comfort trial gives you the flexibility to find the perfect fit.

Mattress Stop

Posture Flex Chelsea Pocket 1200 Encapsulated Mattress

From £399.99 £799.99

Designed for a restful night’s sleep, the Chelsea mattress features 1200 individually encased pocket springs (king size) that respond to your body’s movements, providing tailored support and reducing pressure points. A layer of soft memory foam enhances comfort, contouring to your body for a weightless feel.

The Tencel knitted cover adds a touch of luxury, offering a breathable, hypoallergenic, and antibacterial sleeping surface that efficiently absorbs moisture. Integrated air vents promote airflow, keeping the mattress fresh. With a non-turn design, maintenance is effortless simply rotate for lasting performance.


Features:


All of our mattresses comply to UK Fire Flammability standards.

Mattress fabric shown in the photo can change due to availability and trend shifts in the market place.

Size

  • Small Single
  • Single
  • Small Double
  • Double
  • Kingsize
  • Superking
View product