Firmness
Firm
Type
Pocket Spring
Depth (cm)
28
Number of Layers
6
Trial Period (nights)
Warranty (years)
10
Price Range
£499 to £899
Best Sleeping Position(s)
Certifications
Assessed from the specification published by MattressNextDay, captured September 2026, and from regular price comparison across our UK retail partners.
This mattress is built for people who actively want firmness, whether that's a personal preference or a back that complains on softer beds. The pocket springs contour to your body individually, which means pressure relief at your hips and shoulders without the sinking feeling firm-mattress fans dislike. High-density support layers sit on both sides, so flipping it regularly should help it last, and the retailer listing states a Sleepeezee 10-year guarantee for reassurance. A breathable Belgian damask cover and a cotton filling layer help regulate temperature, useful if you tend to run warm. The range runs from £499 to £899 depending on size, but a double-sided, 28cm-deep pocket spring build goes some way to justifying that.
Key Features & what's inside
- Damask Cover. A breathable Belgian damask fabric cover. It lets air move through the surface, which means less heat building up around you overnight.
- Comfort Layer. A generous polyester and cotton blend layer that cushions your body. It softens the surface slightly without compromising the firm feel underneath.
- Soft White Fibres. Fibre fillings made from 100% polyester. These recover their shape well, which means the comfort layers should resist flattening over time.
- Cotton. A natural filling that helps regulate body temperature. It also adds a touch of extra support and comfort.
- Pocket Springs. Up to 1600 pocket springs that work independently, contouring to your body as you move. That means targeted pressure relief where you need it, and less disturbance from a partner shifting about.
- High-density Support Layers. Dense support layers on both sides of this double-sided mattress. They add further pressure relief and let you flip the mattress to spread the wear.
Layer details from mattressnextday.co.uk product page, September 2026.
Who's it NOT for?
This is described as extra firm, so lightweight sleepers and dedicated side sleepers will likely find it too hard, with pressure building at the shoulder and hip. If you like a plush, sink-in surface, look elsewhere. It's also double-sided, so you'll need to be able to flip it regularly.
Sleepeezee Ortho Firm 1600 Mattress
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How firm is the Sleepeezee Ortho Firm 1600 mattress?
Sleepeezee describes it as extra firm, so expect a very solid, supportive surface. The cotton and polyester comfort layers add a little surface cushioning, but this is a mattress for people who genuinely prefer a firm feel, particularly back and front sleepers.
Does the Sleepeezee Ortho Firm 1600 have a guarantee?
The MattressNextDay listing states a Sleepeezee 10-year guarantee. No trial period is mentioned on that page, so check the returns terms with whichever retailer you buy from before ordering.
How many springs does the Sleepeezee Ortho Firm 1600 have?
The retailer listing describes up to 1600 pocket springs, and lists 1600 in the specifications. Each spring moves independently, which means support adjusts to your body shape and movement rather than the whole surface responding as one.
Do you need to flip the Sleepeezee Ortho Firm 1600?
Yes, it's a double-sided mattress with high-density support layers on both sides. Flipping it regularly spreads the wear across both surfaces, which should help it keep its feel for longer. Bear in mind it's a 28cm-deep mattress, so flipping is a two-person job for most.
What sizes does the Sleepeezee Ortho Firm 1600 come in?
Five UK sizes: Single, Small Double, Double, King and Super King. Prices range from £499 to £899 depending on the size you choose.
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