Single Mattresses

What size is a single mattress?

A standard single mattress measures 3 feet wide and 6 feet 3 inches long (90cm by 190cm) and is designed to sit perfectly on top of a single bed. For more sizing information, read our mattress size guide or explore our guide to the perfect bed-to-bedroom ratio to decide if a single bed and mattress are right for your room.

How thick is a single mattress?

Our single mattresses range in thickness from 6 to 12 inches (15 to 31cm). The correct thickness for you will vary depending on your preferred level of support and firmness, as well as your bed frame. Thinner mattresses under 15cm are better suited to children, while thicker mattresses may be better suited to heavier individuals.

Types of single mattresses

Choose from a range of different mattress fillings to suit your sleep preferences:

• Pocket spring single mattresses: These are ideal for couples and restless sleepers. They feature individually wrapped springs that respond to your body's movements, reducing motion transfer and providing targeted comfort.
• Combination single mattresses: Combine pocket springs with foam and gel layers for ultimate pressure relief, helping to alleviate aches and promote more restful sleep.
• Memory foam single mattresses: Contour to the body to absorb movement and provide personalised support that gently cushions the joints and alleviates pressure points.
• Foam single mattresses: Made with premium foam that provides firm and stable support, these mattresses absorb motion and offer excellent durability.
• Traditional spring single mattresses: Feature a series of connected springs and an open coil system that promotes airflow to keep you cool at night. They offer excellent support and value for money.
• Gel single mattresses: These are specifically engineered to adjust to your body shape while keeping your temperature balanced throughout the night.
• Natural single mattresses: Crafted from natural materials like cotton and wool, these mattresses help wick away moisture, keeping you dry and comfortable throughout the night.
• Latex single mattresses: Feature a natural latex layer and offer hypoallergenic support that helps resist dust mites and allergens, promoting a healthier sleep environment.

What firmness ratings do single mattresses come in?

Our single mattresses come in a range of comfort ratings. The best type for you will depend on your personal preferences, along with your sleep style:

• Soft mattresses are typically suited to side sleepers and those who prefer a cushioned feel that adapts to their body.
• Medium mattresses are a versatile choice for combination sleepers and ideal for those who switch sleeping positions throughout the night.
• Firm mattresses are usually best for back and stomach sleepers and those with back or pressure problems.
• Very firm mattresses offer additional support for joints and pressure points, making them perfect for anyone with pain or a higher body weight.

Are single mattresses suitable for children?

Single mattresses are perfect for children over two and are a great next step after a cot bed. Our kids' single mattresses are designed to support growing bodies, with added features like waterproof covers and anti-allergy properties for extra peace of mind.

Can a single mattress be used with a bunk or day bed?

A single mattress fits perfectly on most day beds, allowing you to choose from our range to match your comfort preferences. While most bunk beds are suitable for a single mattress, they often require a mattress depth under 15cm (6 inches) to keep your child below the safety rail. Be sure to check both the mattress and bed specifications before purchasing. Alternatively, we offer a range of bunk bed mattresses specially designed for both top and bottom bunks.

Are single mattresses comfortable for adults?

Yes, a single mattress offers ample space for most adults, with 90cm of width and the same length as a double, ideal for solo sleepers who enjoy a cosier feel. However, it may not suit those who like to stretch out or change position during the night. If you’d prefer a little extra room, explore our small double and double mattresses.

Need more help choosing a single mattress?

For a personalised mattress recommendation, get in touch with one of our bed experts or try our Mattress Finder, which uses Sleepmatch technology to consider your unique preferences and help you find the perfect single mattress for your best night's sleep. Plus, with our 100-Night Sleep Guarantee, you can rest easy knowing you can exchange your mattress if it's not the perfect fit (T&Cs apply).