Double Mattresses (4'6" / 135cm)

What size is a double mattress?

The size of a double mattress is 135cm wide and 190cm long. In imperial measurements, this is 4 feet 6 inches wide and 6 feet 3 inches long (4'6" x 6'3") making it the same length as a single mattress, but 45cm / 18in wider. This size of mattress is often referred to as a 4ft 6 mattress. It's the most popular mattress size for average-sized bedrooms as well as being the most popular size of all UK sales.

How to choose a double mattress?

When shopping for a double bed mattress, there are a few important factors to consider to make sure you make the right purchase:

• Decide who the mattress is for. You should have 10cm (4 inches) of space between the end of the mattress and your feet. If you are taller than 180cm (5'11"), you will be more comfortable with a king size or superking mattress if you have the space available
• Select the right firmness level for you. Choose from softer, medium, medium-firm and firmer double mattresses. Some of our mattresses are available with split tensions (i.e. Medium on the left and Firm on the right) if each user has a different preference - See our Harrison Spinks mattresses for further details
• Choose your mattress type. You can choose from a variety of options, including memory foam, natural latex's, pocket sprung mattresses, natural mattresses and much more!

Our Double Mattress Range

In this range of comfortable double mattresses, we have over 40 options available, including open coil, pocket sprung, natural filling, memory foam, gel, and natural latex mattresses. We also stock mattresses in a wide choice of firmness ratings all designed to provide ample support across your pressure points. 

We stock double mattresses from top brands in the business, including Highgrove, Hypnos, Silentnight, Harrison Spinks and more. You might also be interested in our innovative range of Harrison Spinks Velocity mattresses. Available in nine different models, including dual-sided and turn-free styles, you're bound to find a mattress that suits your sleeping style.

Don't forget, we also stock a wide choice of stylish divan beds, frames, and headboards. Anything in this range would pair perfectly with your brand-new mattress.

All of our beds and mattresses come with free local delivery to Chester, Wirral, Wrexham, Flintshire, Conwy, Denbighshire, or anywhere else in North East Wales, and all models are generally available to try in store. So, if you're not sure which one is right for you, just pop into our local store in Connah's Quay, Deeside to test them out.

Choosing your Double Mattress

All our quality mattresses offer excellent comfort and support, whether you're looking for a mattress for yourself, a new mattress for the guest room, or upgrading from a single mattress we're sure to have the mattress to suit your needs. All our mattresses get their primary support from their spring units (open coil or pocket sprung), with comfort layers of memory foam, gel, or natural fillings.

Memory foam mattresses provide excellent pressure relief but can feel warmer than gel, latex or natural filling mattresses. If you tend to sleep hot, you may wish to consider one of our gel mattresses, natural mattresses or hybrid mattresses designed to promote better airflow. The best advice as with all mattresses is to try before you buy, which you can do in our Flintshire store 7 days a week.

More information - 5 Signs It's Time to Replace Your Mattress | Expert Advice

Brands Available

We stock a range of beds and mattresses in store, including: Beauty Sleep, Dura Beds, Harrison Beds, HealthBeds, Highgrove Beds, Hypnos, MiBed, MoreSleep, Premier Beds, Relyon, Rest Assured, Sealy, Shakespeare, Silentnight, and Smeaton Brothers

Double Mattress Types Explained

Choosing the right mattress starts with understanding the different types available. While all mattresses are designed to support your body and provide a comfortable night's sleep, each construction offers a different feel and set of benefits.

Pocket Sprung Double Mattresses

Pocket sprung mattresses remain one of the most popular choices in the UK. Each spring is individually wrapped and works independently, allowing the mattress to respond to your body's movements. This can help reduce partner disturbance and provide more targeted support than traditional open coil mattresses.

Memory Foam Double Mattresses

Memory foam mattresses mould to the shape of your body, helping to relieve pressure on areas such as the shoulders, hips and lower back. They are particularly popular with side sleepers and those looking for a softer, more cushioned feel.

Gel Double Mattresses

Gel mattresses offer similar pressure-relieving benefits to memory foam but are often designed to provide improved airflow and temperature regulation. They can be a good option for people who find traditional memory foam too warm.

Hybrid Double Mattresses

Hybrid mattresses combine pocket springs with foam, gel or natural comfort layers. This creates a balance of support and comfort, making hybrid mattresses one of the fastest-growing mattress categories in the UK.

Natural Filling Double Mattresses

Natural mattresses use fillings such as wool, cotton, hemp, cashmere and other natural fibres. These materials are valued for their breathability, comfort and ability to help regulate temperature throughout the year.

If you're unsure which mattress type is right for you, we recommend visiting our Connah's Quay showroom where you can compare different styles and comfort levels before making a decision.

Double Mattresses for Back Pain

Many customers visit us looking for a mattress that offers better support and improved comfort. While no mattress can cure medical conditions, choosing a supportive mattress can help promote healthy spinal alignment and reduce pressure points while you sleep.

The best mattress for back pain varies from person to person. Body weight, sleeping position and personal comfort preferences all play a role. Some people prefer the supportive feel of a firm pocket sprung mattress, while others find a medium-firm hybrid mattress offers the ideal balance of comfort and support.

We stock a wide range of pocket sprung, hybrid, orthopaedic and natural mattresses from leading manufacturers including Harrison Spinks, Sealy, Hypnos and Highgrove. Many of these models are available to try in-store, allowing you to compare different support levels before buying.

If you're replacing an older mattress, it's worth remembering that even a high-quality mattress will gradually lose comfort and support over time. A new mattress can often make a noticeable difference to your overall sleeping comfort.

Why Buy a Double Mattress from Coast Road Furniture?

Established in 1972, Coast Road Furniture has been helping customers across Flintshire, North Wales, Chester and Cheshire find the right mattress for over 50 years. As a family-run independent retailer, we focus on offering quality products, honest advice and excellent customer service.

Unlike buying online without trying first, our showroom allows you to compare dozens of mattresses from leading brands including Harrison Spinks, Sealy, Hypnos, Silentnight, Highgrove and more. Our experienced team can help explain the differences between mattress types, firmness levels and support systems, helping you choose with confidence.

We also offer free local delivery, room-of-choice placement, setup and packaging recycling on qualifying orders, making the process as simple and stress-free as possible.

Whether you're looking for a budget-friendly guest room mattress, a supportive orthopaedic mattress or a luxury natural mattress, you'll find a wide choice available both online and in our Connah's Quay showroom.

Why Customers Choose Us

• • • Established in 1972
    • Family-run independent retailer
    • National Bed Federation Retail Champion
    • Large mattress showroom with dozens of models on display
    • Most mattresses available to try before you buy
    • Free local delivery on qualifying orders
    • Room-of-choice delivery and setup
    • Packaging recycling included
    • Open 7 days a week

Frequently Asked Questions

What size is a standard double mattress?

A standard UK double mattress measures 135cm x 190cm (4'6" x 6'3").

Is a double mattress big enough for two adults?

For many couples, a double mattress provides sufficient sleeping space. However, if you prefer extra room or are taller than average, a king size mattress may be worth considering.

How often should I replace my mattress?

Most mattresses should be replaced approximately every 7 to 10 years, depending on usage and condition. Signs that it's time to replace your mattress include sagging, reduced support and waking up feeling stiff or uncomfortable.

What firmness mattress should I choose?

The best firmness depends on your body weight, sleeping position and personal preference. Lighter individuals often prefer softer mattresses, while heavier individuals typically benefit from medium-firm or firmer support.

Are pocket sprung mattresses better than memory foam?

Neither option is universally better. Pocket sprung mattresses provide responsive support and excellent airflow, while memory foam mattresses offer pressure-relieving comfort and body contouring. The best choice depends on your preferences.

Are hybrid mattresses worth buying?

Hybrid mattresses combine supportive pocket springs with comfort layers such as foam, gel or natural fillings. Many sleepers find they offer an excellent balance of comfort, support and durability.

Can I try a mattress before buying?

Yes. Most of our mattresses are available to try in-store at our Connah's Quay showroom, allowing you to compare different comfort levels and support options before making your decision.

Do you deliver double mattresses in North Wales and Chester?

Yes. We offer free local delivery on qualifying orders throughout Flintshire, Chester, Wrexham, Wirral, Denbighshire, Conwy and surrounding areas.

Do you stock firm double mattresses?

Yes. We stock a wide selection of firm and extra-firm mattresses from leading brands including Harrison Spinks, Sealy, Highgrove and HealthBeds.

What's the difference between a double and king size mattress?

A king size mattress is wider and longer than a double mattress. A standard king size measures 150cm x 200cm, providing additional sleeping space for couples who have room for a larger bed.