Mattress Online Rock Hard Mega Firm 1500 Pocket Small Single Mattress
The Rock Hard Mega Firm 1500 Pocket Mattress does exactly what the name suggests.
- Extra-firm for back & front sleepers
- Handcrafted in the UK, fully recyclable
- 100-night trial & 5-year guarantee
£258
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Mattress Online Rock Hard Mega Firm 1500 Pocket Mattress
More available sizes
Mattress details
Mattress
Mattress Online Rock Hard Mega Firm 1500 Pocket Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Orthopaedic
Depth (cm)
25
Layers
2
Layer Details
Comfort Layer
Soft white fibre fillings, finely filled with high density compressed polyester. This gives a thin layer of cushioning over the springs, which means you'll feel comfort at the surface but firmness underneath rather than a plush, sink-in feel.
Support System
1500 pocket springs that gently contour around your body for personalised support. Because each spring moves independently, you get support matched to your shape and less motion transfer if you share the bed.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
This size suits you if...
Consider another size if...
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's