1. Small Single
2ft6″ x 6ft3″ (76cm x 190cm)
Best for:
• Young children transitioning from a cot.
• Smaller guest rooms or box rooms where space is limited.
Considerations:
Ideal for compact spaces, but may feel cramped for teenagers or adults.
2. Single
3ft x 6ft3″ (90cm x 190cm)
Best for:
• Teenagers and young adults.
• Solo sleepers who want just enough space.
Considerations:
Great for narrow rooms, but may not provide enough room for taller individuals or those who toss and turn.
3. Small Double
4ft x 6ft3″ (120cm x 190cm)
Best for:
• Couples who don’t mind sharing a cosy space.
• Single sleepers who like extra room to stretch out.
Considerations:
A practical option for smaller bedrooms, though it might feel tight for two.
4. Double
4ft6″ x 6ft3″ (135cm x 190cm)
Best for:
• Couples in standard-sized bedrooms.
• Single sleepers wanting more comfort.
Considerations:
The most popular size in the UK, offering versatility. However, larger couples may prefer more space.
5. King
5ft x 6ft6″ (150cm x 200cm)
Best for:
• Couples who want extra width and length.
• Taller individuals needing additional legroom.
Considerations:
Works well in larger bedrooms but ensure your room has enough space to move around comfortably.
6. Super King
6ft x 6ft6″ (180cm x 200cm)
Best for:
• Couples who prioritise maximum space and luxury.
• Families where children or pets occasionally share the bed.
Considerations:
The ultimate in comfort, but it requires a spacious bedroom to avoid feeling cramped.
Common Issues and Solutions
1. Small Bedrooms
• Choose a Small Double or Single to maximise space without sacrificing comfort.
2. Taller Individuals
• Opt for King or Super King for extra legroom. A mattress length of 6ft6″ (200cm) ensures no dangling feet!
3. Couples Sharing a Bed
• Consider body size and sleep habits. A Double may feel cramped for two, especially if one partner is a restless sleeper.
4. Family Sleepers
• Super King is ideal if kids or pets join you in bed occasionally.
Quick Tips
• Always measure your bedroom space before buying. Leave at least 24 inches (60cm) of walking space around the bed.
• Don’t forget bed frames! The overall size, including the frame, can add extra bulk.
Reasons to Buy
Reasons to Buy
Description
Description
The Posture Flex Pocket Cool Blue 1200 Encapsulated Mattress is designed with advanced pocket spring technology for optimal support. Its Cool Blue memory foam provides a comfortable and cool sleeping surface. The encapsulated edge support enhances durability and edge-to-edge comfort. Ideal for a restful night's sleep.
Mattress Features:
- Type of mattress: 1200 Pocket Sprung (count based upon a 5ft kingsize mattress) – individual knitted pockets with springs to give support and less roll together.
- Fillings: Cool Blue PU based Memory foam (25mm) & Soft Foam
- Mattress Depth: 25 cm
- Mattress Support: Soft
- Mattress Format: Breathable and Removable Zip Cover
- Mattress Handles: N/A
- Guarantee: 1 year
- Fully turnable: Non Turn
Additionals:
- Hypo allergenic - This Cool Blue Encapsulated Mattress is hypoallergenic, making it suitable for individuals with allergies or sensitivities. This feature helps reduce the risk of allergic reactions and ensures a healthier sleep environment.
- Cool Max Sensitive touch technology – if you have tried Memory Foam and love the support but loathe the fact that it is warmer than a conventional mattress then this Cool Blue Foam will be ideal for you.
All of our mattresses comply to UK Fire Flammability standards.
Dimensions
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
Delivery
|
Third party independent couriers (weekdays) |
FREE |
|
Weekday delivery Order up to 60 days ahead |
FREE |
|
Weekend On Saturday or Sunday |
FREE
|
|
Delivery to the front door of your building |
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 |
|
Assisted Delivery to your room of choice |
£15.00 |
|
Mattress recycling We'll take away your old mattress |
£39 |
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
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.


