Pure Foam King Size Mattresses Under £150

Get a better night's sleep without spending a fortune. This 20cm foam mattress is designed for real life – whether you're upgrading your main bedroom, furnishing a guest room, setting up a child's room, or kitting out a rental flat. Available in four practical sizes: Single, Small Double (4'), Double (4'6"), and King (5'). The Single size also a great fit for caravans, campervans, and sofa beds, giving you a comfortable sleep surface wherever you need it. It combines a soft gel memory foam top layer with a firm high-density foam base, offering the right balance of comfort and support. Breathable, hypoallergenic, and easy to set up, it's a simple upgrade for better rest.

Fantastic mattress! Its the perfect balance of medium-firm support and plush comfort. The fabric feels wonderfully soft and breathable, making for a great nights sleep. Highly recommend!. Anonymous. Sat Sep 26 2026

Look forward to going to sleep quicker and staying asleep longer on this mattress. It will support the body's sleeping position every night. It combines the excellent support and comfort of the pressure-relieving layer of responsive individually wrapped material to provide a superior level of luxury and relaxation.

Great bed and mattress! Super comfy and exactly as described!. Manon. Thu Sep 10 2026

Get the perfect balance of comfort, support, and affordability with our premium memory foam mattress, designed to deliver restorative sleep without breaking the bank. Crafted with body-hugging memory foam, this medium-firm mattress contours to your shape, providing ergonomic support that helps you wake up feeling refreshed. Infused with green tea and active charcoal, this mattress actively combats odours and moisture, keeping your bed feeling fresh night after night. The breathable knitted cover enhances airflow, ensuring a cooler, more comfortable sleep experience. Certified by OEKO-TEX® and CertiPUR-US®, it meets the highest safety and environmental standards, so you can rest easy knowing it’s free from harmful chemicals. For ultimate convenience, this mattress arrives compressed and rolled in a compact box—simply unbox, unroll, and watch it expand to its full shape within 72 hours. Backed by a 10-year limited warranty, it's an ideal choice for guest rooms, spare bedrooms, or everyday use.

It’s so good, softest mattress ever. Anonymous. Fri Oct 02 2026

Designed to provide supportive everyday comfort, this 12.5cm deep full-foam mattress features next-generation open-cell Reflex Foam with a medium-firm feel. With no springs inside, the mattress provides consistent support across the sleeping surface while offering a comfortable combination of cushioning and responsive bounce-back. The Reflex Foam structure is made up of thousands of tiny air cells that compress and respond as you lie on the mattress. This allows the foam to gently contour to the body while providing supportive resistance and returning to its original shape when not in use. Finished with a soft, breathable fabric across both the sleeping surface and border, the mattress encourages airflow to help manage excess heat and maintain a fresh and comfortable sleeping environment throughout the night. For convenient delivery and easier handling around the home, the mattress is compressed, vacuum-packed, rolled and boxed. Once unpacked, allow approximately 24–48 hours for the mattress to fully expand and return to its intended size and shape.

Firm mattress as described. Received next day with free delivery. Very happy. Asc. London. Wed Aug 05 2026

Experience the perfect blend of comfort and coolness with our sponge mattresses. Crafted for ultimate relaxation, these mattresses offer a plush comfort that contours to your body, ensuring a restful night's sleep. The cover is designed with a cool-to-touch fabric, providing instant relief from the heat and promoting a refreshing sleep environment. Beneath the surface, a supportive structure cradles your body, reducing pressure points and aligning your spine for a healthy sleep posture. We've put your needs first, creating a mattress that's not just comfortable but also thoughtfully designed for a better night's sleep. With our commitment to quality and your satisfaction, you can rest easy knowing you've chosen a mattress that truly cares for your comfort.

Great mattress! It’s very comfortable, supportive, and has really improved my sleep. Good quality for the price, and I’d definitely recommend it.. Anonymous. Fri Jul 17 2026

Sleep. Grow. Thrive. The Thrive Kids Trundle Eco Comfort Foam Mattress is designed to give children and teens a supportive, comfortable night’s sleep at an affordable price. Built with high-density Eco foam, this medium-firm mattress provides orthopaedic support that helps growing bodies maintain healthy posture and proper spinal alignment. Perfect for trundle beds, bunk beds, cabin beds, and guest beds, the low-profile design fits safely and securely into most raised frames. The silent, spring-free foam construction ensures no noisy springs or motion transfer, making it ideal for shared bedrooms, sleepovers, or light sleepers. This mattress is UK made with over 20 years of mattress-making experience, using CertiPUR certified foam and BS7177 fire safety compliant. The quilted, zip-off machine-washable cover keeps the mattress fresh, while the hypoallergenic, dust-mite resistant foam supports a healthier sleep environment for children. Lightweight, durable, and easy to clean, the Thrive Kids mattress is a smart, value-for-money choice for parents looking for comfort, support, and practical features without overspending.

It’s good value for the money , comfortable and cosy. Anonymous. Fri Jun 19 2026

Sleep cool and undisturbed with this pocket spring coils hybrid mattress, blending cooling gel memory foam and 5-zone pocket springs for tailored support. The breathable 3D quilted cover and gel-infused foam work with airflow-focused coils to dissipate heat, while the zoned spring system cradles body for balanced comfort. Individually wrapped springs block motion transfer, so restless partners won’t disrupt your deep sleep. Delivered in a compact box—unroll, let it expand, and enjoy instant comfort. Backed by a 10-year warranty and dedicated support team, this medium-firm design ensures lasting durability and restful nights.

Great mattress- really comfy!!! Quick delivery. A. Grantham, GB. Sun Aug 23 2026

Our slimmest mattress, made for the lowest bed frames — a great choice for a child's first proper mattress in bunk beds, cabin beds and mid-sleepers. Visco-elastic memory foam moulds to your child's shape, supporting the spine and neck while dispersing weight evenly to ease pressure at the shoulders, hips and lower back. Its open-cell structure lets air circulate freely, and the foam is dust mite and mildew resistant. Delivered rolled and boxed. Once unwrapped, allow 48–72 hours in a well-heated, well-ventilated room for the mattress to expand to full size and for the initial foam odour to clear. General information: Manufacturer's 1 year guarantee.

Bought it as a bed topper. Very happy with the purchased. Delivered on time. Yaku. Cork, Ireland. Tue Jan 21 2025

Our budget recon foam mattress is great value for anyone who is looking for a firm mattress and does not like the feel or warmth associated with memory foam, or the bounce that comes from springs. Recon foam is a non-reacting foam and therefore provides great orthopaedic support to the body. This silent mattress is suitable for all bed types. Single-sided mattress - please do not turn. Vacuum packed and rolled for easy delivery and transportation. Please note: once unrolled the mattress requires up to 72 hours to fully expand and reform to its original shape. The additives used in the manufacturing of foam may give rise to a slight odour. If this should occur, please remove all packaging and store it in a well-ventilated room for 48 hours. The odour is safe and will dissipate over time.

Brilliant mattress. Firm and perfect as a first big kid bed. Anonymous. Sun Aug 25 2024

This mattress is taken from our unique uni contract range – this mattress is designed specifically for commercial business and exclusively for hostels, hotels, halls of residences, students & universities which exceeds all required standards whilst providing both long-term value and superb levels of comfort. The mattress is designed with a Stamford stripe top panel with a 4-inch border (approximately 10cm). This full-foam orthopedic reflex foam mattress provides soft comfort. The reflex foam is made up of thousands of air bubbles that expand and contract when the sleeper lays on the mattress, providing the body molding and bounce-back properties which offers the user a firm yet hugely comfortable sleep experience whilst always returning to its natural shape when not in use. The contract mattress is fully compliant with all UK & EU legislation and regulations including fire tests & regulations source 5 fire retardant (medium hazard). We’ve also created this mattress to be dual-sided with our signature Stamford stripe fabric on both sides allowing the sleeper to either rotate or flip the mattress. This mattress will arrive vacuum-packed, rolled, and boxed. Once the mattress has been unpackaged, we recommend leaving the mattress for 24 to 48 hours to allow it to expand to its original size.

Good mattress. Light, supportive, comfortable, doesn't have a chemical smell like some mattresses do.. Anonymous. St. Leonards-on-sea, GB. Wed Aug 07 2024

The Westwood Ortho Firm Foam Mattress by The Foam People has been carefully designed to provide reliable firm support, practical comfort, and long-lasting durability for everyday use. Featuring a high-density reflex foam core, this orthopaedic mattress helps to evenly distribute body weight while promoting healthy spinal alignment, making it an excellent choice for those who prefer a firmer sleeping surface.At 10cm deep, the Westwood mattress combines supportive comfort with a compact, low-profile design that is ideal for a wide range of bed types and spaces. Whether used on bunk beds, cabin beds, guest beds, trundle beds or day bedsthis versatile foam mattress offers dependable comfort without unnecessary bulk.The breathable hypoallergenic cover helps create a fresher and more comfortable sleeping environment, while the lightweight construction makes the mattress easy to move, rotate, and position when needed. Designed and manufactured in the UK, the Westwood Ortho Firm Foam Mattress is crafted using quality materials to deliver excellent value, practicality, and performance.Perfect for children, teenagers, guest rooms, occasional use sleeping spaces, and leisure vehicles, this mattress is an ideal solution for customers seeking firm orthopaedic-style support in a slim and versatile design. Delivered rolled and boxed for convenience, the mattress quickly expands and is ready to provide supportive comfort night after night.

Enjoy a comfortable sleep starting with this mattress. Meticulously designed, it combines beauty and durability. The finely stitched top pattern and high-quality fire-resistant fabric surface ensure a soft touch while providing enhanced safety. Inside, multiple layers of foam, cotton and individually wrapped pocket springs offer excellent support, alleviating back pain and delivering a relaxing sleeping experience. Additionally, the symmetrical structure and reinforced edge support ensure overall stability, prevent edge collapse, and extend the service life. Let us welcome each new day full of vitality together.

Comfy. Donna. Clanfield Waterlooville, GB. Tue Sep 15 2026

Unlike standard toppers that shift and slide, this model features a fully enclosed fitted cover with an elasticated deep skirt that stretches to fit securely over mattresses up to 30cm thick. The snug, wraparound design ensures the topper stays perfectly in place all night long—no more bunching, slipping, or readjusting. Simply pull the skirt over your mattress like a fitted sheet and enjoy stable, uninterrupted comfort from edge to edge.

Enjoy a comfortable sleep starting with this mattress. Meticulously designed, it combines beauty and durability. The finely stitched top pattern and high-quality fire-resistant fabric surface ensure a soft touch while providing enhanced safety. Inside, multiple layers of foam, cotton and individually wrapped pocket springs offer excellent support, alleviating back pain and delivering a relaxing sleeping experience. Additionally, the symmetrical structure and reinforced edge support ensure overall stability, prevent edge collapse, and extend the service life. Let us welcome each new day full of vitality together.

Upgrade your sleep with this premium mattress topper. Featuring a 7cm high-density foam base and a 3cm cooling gel memory foam layer, it offers balanced support and pressure relief. The anti-slip bottom and adjustable corner straps keep it securely in place.

This memory mattress is designed with a dual-layer, all-foam system with a very gentle and considerate gel memory foam layer. This layer can be personalized to mold to your body and contours, thus reducing pressure points on your body and giving you the sensation of floating on air. This special design relieves fatigue and stress, leaving you feeling relaxed and at ease, which in turn leads to a higher quality sleep experience.

Love this mattress. I have back issues and needed a firmer bed and this one has been perfect. Very firm and very comfortable.. Stephanie. NJ. Fri Jun 27 2025

Enjoy a comfortable and supportive night’s sleep with this Gel Memory Foam Bonnel Spring Mattress, designed for everyday comfort and practicality. Conveniently delivered flat packed, the mattress is easy to set up—simply remove it from the box, roll it onto your bed, and allow up to 48 hours for it to fully expand before use. The durable Bonnel spring system provides a stable and supportive foundation, helping to evenly distribute weight and promote a good sleeping posture, while the gel-infused memory foam layer gently adapts to your body for enhanced comfort, pressure relief, and a cooler night’s sleep. Combining reliable support with modern convenience, this mattress is an ideal choice for a restful and refreshing sleep experience.

Lovely comfortable mattress. Margaret. Selston Nottingham, GB. Wed Jul 29 2026

Indulge in a restful and rejuvenating sleep with our memory foam mattress. Medium Comfort is supportive for most body types and sleep positions. Too-soft mattresses don’t give proper support and can cause back problems in the long run. Too-hard mattresses don’t provide pressure point relief. The sweet point is our medium mattress strikes the right balance between comfort and support and promotes better sleep.

Super comfortable, great depth very reasonably priced. Anonymous. Shoreham-by-sea, GB. Wed Aug 05 2026

Our Memory Foam Mattress is OEKO-TEX Certified to ensure a healthy sleep and give you peace of mind knowing you are receiving the best quality you deserve for a good nights sleep. Our mattress is made up of 7 layers, each adding a specific function to support the natural curves of your body, providing targeted support and pressure dispersion to relieve your body of any stress points allowing you to enter a more deep sleep through the night. The Memory foam layer is made up of open cell breathable foam making it skin friendly and allows good air flow. It comes vacuum packed in a box and only takes 72 hours to become the supportive, comfortable mattress that you need

Enhance your sleep with this innovative dual-layer mattress topper. The top layer features 2cm of 30D Ocean Blue memory foam, offering a cooling, pressure-relieving surface that adapts to your body. Beneath it, a 3cm high-density grey foam base provides robust, firm support and superior durability. This combination delivers a balanced sleep experience, targeting pressure points while maintaining proper spinal alignment. A perfect, breathable upgrade for any bedroom, guest room, or sofa bed.

This premium mattress delivers lasting comfort and support for all sleepers. Its durable, easy-clean fabric cover pairs with multi-layer fillings and reinforced seams for strength and longevity. Individually wrapped pocket springs reduce motion transfer, keeping you undisturbed for a quieter, deeper sleep. Engineered for resilience, it resists sagging and wear even with long-term use. Safe, supportive, and built to suit all ages, it is an ideal choice for restful, refreshing sleep every night.

Upgrade your sleep with this 7cm dual-layer topper. A 3cm blue gel memory foam layer regulates temperature, while 4cm of 25D high-density foam provides orthopaedic support and pressure relief. Adjustable elastic corner straps with buckles keep it securely in place. Perfect for refreshing tired mattresses.

The mattress offers a perfect balance between comfort and support, providing you with the ideal sleeping experience. Available in both 4 and 6-inch thickness options, you can select the one that best meets your preferences and needs. Additionally, the mattress comes in a range of sizes, allowing you to find the perfect fit for your bed. Whether you have a single, small double, double or king-sized bed, there is a Recon mattress for you. With its carefully designed construction, the mattress ensures optimal comfort, relieving pressure points and promoting a restful night's sleep. Say goodbye to tossing and turning and wake up feeling rejuvenated and energized with the Recon mattress.