Firm Mattresses

How does a firm mattress feel?

Our firm mattresses provide a solid sleep surface with minimal give. They feel supportive and stable - ideal if you prefer a hard sleep surface.

What are the benefits of a firm mattress?

A firm mattress provides a supportive, stable sleep surface that helps keep your spine properly aligned throughout the night. This makes it a popular choice for back and stomach sleepers, or sleepers who prefer less of a ‘sink-in’ feel.

Firm mattresses are a popular option because they can:

• Help keep your spine aligned while you sleep
• Distribute your weight more evenly across the mattress
• Reduce that ‘sinking’ feeling you get with softer models
• Offer long-lasting support and durability

If you’re looking for a hard mattress that feels solid and dependable night after night, a firm mattress option is a great place to start.

Who is a firm mattress best for?

A firm mattress tends to suit sleepers who need a bit more support and don’t enjoy a softer, cushioned feel.

A firm mattress is usually a good fit if you:

• Sleep on your back and want to keep your spine aligned
• Sleep on your front and need to stop your hips dipping too far
• Have a heavier build and need more support from your mattress
• Prefer a bed that feels sturdy rather than soft

If you like a bit more cushioning or tend to sleep on your side, you might find a medium firm or medium mattress more comfortable.

How to choose the right mattress firmness level

Finding the right firmness really comes down to how you sleep and what feels comfortable to you.

As a simple guide:

• Extra firm mattresses provide the the firmest sleep surface
• Firm mattresses offer strong support with minimal sink
• Medium firm mattresses provide a balanced feel with responsive support and light cushioning
• Medium mattresses balance comfort and support
• Soft mattresses feel more cushioned and plush

If you sleep on your front or back, or just prefer a more supportive feel, a firm mattress is often the right choice. If you’re unsure, it’s worth thinking about what your current mattress is missing and working from there.

What type of firm mattress do I need?

Not all firm mattresses feel the same. The materials inside the mattress can make a big difference to how supportive, breathable or responsive your sleep surface feels.

Here’s a quick guide to the main types:

Pocket sprung

Pocket sprung firm mattresses use individually wrapped springs that respond to your body as you move. They’re a great all-round option if you want reliable support without too much motion transfer.

Standard sprung and open coil

These firm mattresses use a connected spring system to create a firmer, more traditional feel. They’re often a more budget-friendly choice for any master bedroom or spare room.

Memory foam

Firm memory foam mattresses mould slightly to your shape while still keeping a supportive feel. They’re a good option if you want targeted pressure relief without a sink-in feel.

Natural

Natural mattresses use materials like wool and cotton to create a breathable, supportive sleep surface. They’re ideal if you want a more premium feel with added temperature regulation.

Gel foam

Gel foam firm mattresses are designed to stay a little cooler through the night while still offering firm support, making them a good choice if you tend to overheat or feel restless at night.

Latex

Latex has a slightly springier, more responsive feel than memory foam, while still offering firm support. It’s also known for being more breathable with a slightly cooler feel than memory foam.

Orthoapedic

Orthopaedic mattresses are built with back support in mind, often with a firmer feel to help promote better spinal alignment.

Rolled-up

Rolled-up firm mattresses are vacuum-packed for easy delivery, so it’s easy to store until you’re ready to use it. Once opened, they expand fully and provide the same level of firm support.

Single/Double Sided

• Single-sided mattresses are easy to care for and only need to be rotated every few months to keep the fillings inside evenly distributed
• Double-sided mattresses need to be rotated and flipped every few months to prevent the fillings from settling too much

Both options are available with firm support.

Pillow top

Pillow top firm mattresses add a plush layer on top of a supportive base, so you get a balance of a slight sink-in experience and firmness rather than a completely hard feel.

What is a good firm mattress brand?

Choosing a trusted mattress brand can make all the difference when it comes to comfort and durability. We stock a range of well-known names, each with their own benefits.

Silentnight

A popular brand for everyday comfort, Silentnight mattresses are known for being reliable, affordable and widely trusted across the UK.

Sleepeezee

Sleepeezee focuses on handcrafted mattresses using high-quality materials - ideal if you’re looking for something a little more premium.

Sealy

Sealy is well known for its focus on support, with designs aimed at promoting better sleep posture and spinal alignment.

Relyon

Relyon mattresses are hand-finished and built to last, offering a more traditional, high-quality mattress feel.

What size firm mattresses are available?

We stock hard mattresses in all standard sizes:

• Small single - 75cm x 190cm
• Single - 90cm x 190cm
• Small double - 120cm x 190cm
• Double - 135cm x 190cm
• King size - 150cm x 200cm
• Superking - 180cm x 200cm

Our firm mattress also come in specialist sizes, too:

• Small single short - 75cm x 175cm
• Single short - 90cm x 175cm
• European double - 140cm x 200cm
• European king size - 160cm x 200cm
• Superking zip and link - 180cm x 200cm
• Emperor - 200cm x 200cm

Do your firm mattresses come with a warranty?

Yes, all our firm mattresses come with a minimum 1-year warranty. Some models include up to 10 years of cover, depending on the brand.

You’ll also get our 100-Night Comfort Trial, so you can try your new mattress risk-free.

Firm Mattress FAQs

Is a firm mattress good for your back?

Yes - firm mattresses can support better spinal alignment, especially for back sleepers. They help distribute weight evenly across your shoulders, hips, and lower back for a healthier sleep posture.

Not sure if a firm mattress is best for your body type? Our mattress firmness guide has more information.

What is the best firm mattress?

The best firm mattress really depends on what feels right for you.

Some sleepers prefer the contouring feel of memory foam, while others like the responsiveness of springs. Your sleep position, body weight and personal comfort all play a part.

Whether you’re looking for a single firm mattress or a king size firm mattress, the best choice is the one that gives you the right balance of support and comfort for a good night’s sleep for your needs.

Will a firm mattress get softer?

Over time, a firm mattress will usually soften slightly as the materials and fillings settle and adjust to your body weight and position. This is completely normal and often makes the mattress feel more comfortable, without losing the firm feel.

If your firm mattress begins to feel softer over time, regularly flipping or rotating it can help maintain its firmness by preventing the fillings from settling.

What’s the difference between extra firm and firm mattresses?

Firm and extra firm mattresses differ mainly in how much they ‘give’ under your body weight.

Firm mattresses offer a solid level of support with a slight cushioning layer. They contour a little to your body, which helps relieve pressure at key points like shoulders and hips while still keeping your spine aligned.

Extra firm mattresses are much more rigid, with minimal cushioning. They allow very little sink, keeping your body more ‘on top’ of the mattress rather than sinking into it. This can suit back and stomach sleepers, or anyone who prefers a very sturdy, supportive feel.