Medium-Firm Orthopaedic King Size Mattresses

Kingsize (5')

Indulge in unparalleled comfort and backing with our thick Mattress, an exquisite fusion of cutting-edge technology and classic design. This medium-firm mattress arrives neatly in a compact box, merging the steadfast support of pocket coils with the sophisticated coziness of hybrid pocket spring technology.

Prompt delivery. Inflates quickly, less than an hour. My husband said its good however we have not used it yet. Jane. Wed May 20 2026

Kingsize (5')

Introducing the majestic 26cm Mattress, a true masterpiece of comfort and support, elegantly packaged in a convenient box. Crafted with precision, this medium firm mattress combines the best of both worlds - the classic reliability of a pocket coil design and the innovative technology of a hybrid innerspring mattress.

Very comfortable and soft! No complaints from me. Josh. Thu Jul 30 2026

Kingsize (5')

Discover the luxurious 31cm Mattress, a pinnacle of comfort and support, thoughtfully delivered in a compact box. Meticulously designed, this medium-firm mattress seamlessly merges the timeless stability of pocket coils with the cutting-edge innovation of hybrid innerspring technology.

This mattress is supportive, a lovely feel against the skin, and a good price. Ordered on a Friday morning, and it arrived lunchtime the next day. Great service from Wayfair and Evri x. Orla. South Wales. Thu Aug 20 2026

Kingsize (5')

Experience the ultimate comfort and support with the 28cm Mattress, a premium blend of innovation and tradition. This medium-firm mattress, conveniently packaged in a compact box, combines the reliable stability of pocket coils with the advanced comfort of hybrid pocket sprung technology.

Very comfortable and good quality. Satisfied customer!. Anonymous. Minffordd Penrhyndeudraeth, GB. Sat Aug 08 2026

Kingsize (5')

Giving you the perfect blend of comfort and support without the need for a thicker mattress, the Reflex Core mattress delivers on quality and affordability. Available in Single, Small Double, Double and King sizes. Topped with a layer of responsive memory foam on a base of reflex foam, all encased in a hypoallergenic Tencel cover, the mattress is 15cm deep with a medium firm comfort level that’s suited to all sleepers, no matter your position, making it an ideal choice for guest beds or children’s rooms. Especially designed to reduce roll-together through minimised movement transfer, this mattress is great for couples, and since there are no springs, the noise-free sleep experience helps to reduce waking periods, giving you a more restful night.

Good quality and great value for money. Rachel. Hucknall Nottingham, GB. Sun Jun 07 2026

Kingsize (5')

Introducing the majestic 34cm mattress, a true masterpiece of comfort and support, elegantly packaged in a convenient box. Crafted with precision, this medium firm mattress combines the best of both worlds - the classic reliability of a pocket coil design and the innovative technology of a hybrid innerspring mattress.

Wonderful! The right firmness for me great height.. Pamela Clark. Edinburgh. Sun Apr 05 2026

Kingsize (5')

Giving you the perfect blend of comfort and support without the need for a thicker mattress, the 12cm deep Reflex delivers on quality and affordability. Available in Shorty, Small Single, Single, Small Double, Double and King sizes. Topped with a layer of responsive memory foam on a base of reflex foam, all encased in a hypoallergenic Tencel cover, the medium firm comfort level is suited to all sleepers, no matter your position, making it a great choice for guest beds or children’s rooms. The slim profile is also ideal for bunk beds, holiday homes, and caravans. Especially designed to reduce roll-together through minimised movement transfer, this mattress is perfect for couples, and since there are no springs, the noise-free sleep experience helps to reduce waking periods, giving you a more restful night.

Comfy and great for my little boy. Not as thick as I was expecting and if you are slightly heavier then maybe not the best. Gabrielle. Willerby Hull, GB. Tue Dec 16 2025

Kingsize (5')

The Memory Ortho Box Pillow Top Mattress is expertly designed to provide the ideal medium to firm feel, perfect for those who want a balance of plush comfort and solid support. The mattress features a 25mm memory foam layer that conforms to the body, offering pressure relief and promoting healthy spinal alignment while still maintaining a supportive, firmer feel ideal for back and side sleepers. At its core, the 12.5g orthopaedic sleep system uses durable bonnel open coil springs arranged in rows, connected by spiral helical wires to provide consistent support and prevent sagging. The combination of these springs with the memory foam layer offers a balanced support system, giving you the stability and pressure relief your body needs for a restorative sleep. The mattress is finished with a luxurious stretch knit cover, providing a soft and breathable surface that enhances comfort while regulating temperature. The hand-tufted construction ensures long-lasting durability, preventing the fillings from shifting. Air vents are placed strategically to encourage airflow, keeping the mattress fresh and cool throughout the night. Plus, handles make rotating the mattress easy to maintain its shape and ensure even wear. The Memory Ortho Box Pillow Top Mattress is the perfect solution for sleepers who want a mattress that combines comfort, support, and durability with a medium to firm feel that promotes healthy, restful sleep.

very comfy and relaxing great product from wayfair. Chris. Luton. Sun Aug 09 2026

Kingsize (5')

Giving you the perfect blend of comfort and support, the 18cm deep Reflex Plus mattress delivers on affordability without sacrificing quality. Available in Single, Small Double, Double and King sizes. Topped with a layer of responsive memory foam on a base of reflex foam, all encased in a hypoallergenic Tencel cover, the medium firm comfort level is suited to all sleepers, no matter your position, making it an ideal choice for guest beds or children’s rooms. Especially designed to reduce roll-together through minimised movement transfer, this mattress is great for couples, and since there are no springs, the noise-free sleep experience helps to reduce waking periods, giving you a more restful night.

Looks great. Anonymous. Wed Aug 12 2026

King

An Ortho foam quality mattress provides firm orthopaedic support when used on either a divan base or a bed frame, helping to maintain the correct alignment of the spine and neck for a healthier and comfortable night sleep. Please note that fabric patterns may vary slightly from what’s pictured, but the quality remains the same.

Helped my back problems. Anonymous. Sat Jul 04 2026

Kingsize (5')

The Dual Response mattress is 20cm deep, combining reflex and memory foams in a hypoallergenic Tencel cover to create the optimal blend of comfort and support while still being affordable. With a medium-firm comfort level, this mattress has no springs, giving you a noise-free sleep experience. Designed to minimise movement transference and roll-together, making it a great choice for couples. Best suited to guest rooms and even children’s beds, the Dual Response mattress is ideal for all sleepers, helping to reduce waking periods and offering more restful nights. Available in Single, Small Double, Double and King sizes.

For spare room so was concerned with depth but it’s very comfortable. Geraldine. Caerphilly. Fri Jul 10 2026

Single (3')

Engineered for those who prioritise posture, control, and responsive support, this orthopaedic open coil reflex mattress delivers a firmer, more structured sleep experience with a refined level of comfort built in. At its core, the orthopaedic open coil spring unit forms a robust and supportive base. Designed with a firmer tension, it works to keep weight distributed evenly across the mattress, ensuring consistent support from edge to edge. Layered above, a high-performance reflex foam layer introduces immediate responsiveness. This material reacts quickly to movement, providing a supportive “push-back” feel that prevents excessive sinkage and maintains a stable sleeping surface throughout the night. The exterior is finished with a quilted fabric cover, offering a smooth, breathable surface with an added touch of softness. Combining firm orthopaedic support with responsive reflex technology and a more considered material approach, this mattress is designed for those seeking a disciplined, supportive feel with dependable comfort and lasting performance.

Kingsize (5')

This mattress offers a top layer of memory foam for comfort and a middle layer of Reflex foam and base layer of EcoFoam for support. Memory foam is soft and pliable allowing it to follow the outline of your body. With a layer of pressure-sensitive memory foam, it is recommended by chiropractors and doctors alike. This mattress supports your body and spine, allowing your body to find a good position and improving blood circulation, resulting in improved sleep. A thick bottom layer of EcoFoam foam is used as the support mechanism/foundation layer in this mattress, providing a supportive layer to ensure your weight is distributed properly. This mattress is completed with a zip-off, double jersey, quilted, dry cleanable cover for improved comfort. This product has been designed and manufactured in the United Kingdom to provide high quality and ensure it conforms to all British fire regulations. Please note: 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.

Very comfy. Anonymous. Wed Jul 15 2026

Kingsize (5')

Classic in style and superior in comfort, the mattress has 1000 individually nested springs that respond independently to your weight and movement through the night, offering a truly tailored and enriched sleeping experience, relieving pressure when you need it most. The sumptuous silk stretch knit fabric covers traditional and modern fillings and features a hand-tufted finish for extra strength and durability. It also features a 3D border that helps regulate airflow and body temperature.

Kingsize (5')

The Claremont posture tech mattress by Sealy works to keep you comfortably rested and supported night after night.memory sense foam works alongside the springs to provide cocooning, body moulding comfort that will help you to stay asleep longer. Memorysense provides targeted comfort where your body needs it the most. Sealys bespoke posturetech spring system is at the heart of the mattress, designed to provide long lasting and deep-down support. The springs react to the weight and movement, applying support where your body needs it the most. The claremont mattress is single sided, and finished with a quilted surface for an added touch of luxury. All sealy mattresses are hand-crafted in britain and come with a 5 year guarantee for extra peace of mind. Medium firm, single-sided mattress 27cm depthavailable in single, small double, double, king and super king sizes. 5 year guaranteehandmade in the UK

Comfortable, sleep well every night. Anonymous. Sun Sep 29 2024

Kingsize (5')

One of the firmest mattresses in the Sealy Ortho Plus Collection, the Eaglesfield PostureTech mattress provides a durable feel you can depend on. MemorySense Foam works alongside the springs to provide cocooning, body moulding comfort that will help you to stay asleep longer. MemorySense provides targeted comfort where your body needs it the most.Sealys bespoke PostureTech spring system is at the heart of the mattress, designed to provide long lasting and deep-down support. The springs react to the weight and movement, applying support where your body needs it the most. Tucked inside the spring unit, Edge Guard works in unison to extend the sleeping area and provide added durability. Plus, a Powerpack is located in the centre of the mattress offering additional support to the lumbar region and works simultaneously with the spring unit to reduce any aches that are disturbing your sleep. The hand tufted surface reinforces the firmer feel, perfect for those who prefer a sturdier, more traditional sleep surface.All Sealy mattresses are hand-crafted in Britain and come with a 5 year guarantee for extra peace of mind. Medium Firm mattress25cm depthAvailable in Single, Small Double, Double, King and Super king sizes.5 year guaranteeHandmade in the UK

Kingsize (5')

If you're looking for deeper, more comfortable sleep, the Edinburgh Mattress is made for you. Its strong 12.5g open coil springs give your body the support it needs to reduce aches, relieve pressure, and keep your spine aligned—so you wake up feeling refreshed, not sore. The soft, hand-tufted damask cover feels smooth and luxurious against your skin, while the plush polyester fillings add the perfect layer of comfort. You’ll stay cooler at night thanks to built-in air vents, and the easy-turn handles make flipping the dual-sided design simple—helping your mattress last even longer. Designed for comfort, support, and everyday luxury, the Edinburgh Mattress helps you sleep better and feel better, every single day.

Kingsize (5')

The Natural Sleep Ortho mattress contains an orthopaedic open coil spring unit which provides excellent levels of support, as well as comfort. It has layers of traditional hypo-allergenic fillings including reflex foam. The layer of reflex foam largely contributes to the firmness rating of the mattress while the other layers offer enhanced comfort and luxury. Reflex foam is made up of tiny holes that slightly adapt to your body shape but bounce back against you at the same time. The high-density foam is naturally hypoallergenic and durable. Flexible and responsive, the mattress provides healthy spine alignment and back support. For a luxurious touch the Natural Sleep Ortho is finished with a soft stretch knit fabric with an organic look and modern embossed design. Finished with a stylish 3D border in chenille grey which allows air circulation and means that air flow is regulated and breathable through the night, ensuring ultimate comfort.

After having it for 2 years it has lasted some time. Overall condition still good. Unfortunately can hear springs whilst I lay down. As it is dual sided I will turn it on the other side and see if this helps.. Rupia. Birmingham, GB. Thu Aug 07 2025

Kingsize (5')

Experience the perfect blend of comfort and support with this orthopaedic mattress, designed to promote better sleep and enhance your overall health. Ideal for those who need extra spinal support, this mattress is crafted with advanced foam technology and a robust spring system to provide the right balance of plush comfort and firm alignment. Whether you suffer from back pain or simply want a mattress that provides optimal support throughout the night, this mattress is built to offer a soft slumber while ensuring proper spine alignment. The orthopaedic design helps reduce pressure points, promoting better posture and a more restful sleep

Kingsize (5')

Meet the magnificent 30cm mattress — a seamless blend of luxury comfort and robust support, thoughtfully delivered in a space-saving box. Meticulously crafted, this medium-firm gem unites the timeless dependability of pocketed sprung with the cutting-edge innovation of a hybrid mattress.

Softer than description. Had a very comfortable sleep.. Faiza. Sutton, GB. Fri Aug 21 2026

Kingsize (5' )

Indulge in luxurious comfort and superior support with the Euro Box Top Pocket Spring Mattress, designed for those who seek a premium sleep experience at an affordable price. This medium-firm mattress features a plush Euro Box Top layer combined with high-density foam and individually wrapped pocket springs, offering the perfect balance of cosy cushioning and targeted support. The orthopaedic design helps maintain proper posture, while the pocket springs adapt independently to your body, reducing pressure points and preventing motion transfer—ideal for couples with different sleep patterns. Wrapped in a breathable, soft-touch cover, this mattress enhances airflow and temperature regulation, ensuring a fresh and cool night’s sleep. Certified by OEKO-TEX® and CertiPUR-US®, this mattress meets high safety and environmental standards, providing a chemical-free and skin-friendly sleep surface. For ultimate convenience, it arrives expertly rolled and compressed in a compact box, making setup quick and hassle-free—simply unbox, unroll, and let it expand within 72 hours. Backed by a 10-year limited warranty, this mattress delivers lasting quality and comfort.

This mattress is so comfortable, it’s such good value for money .. Ashley. Irongray Dumfries, GB. Sun Apr 05 2026

Double

Sink into a deep and restful sleep night after night with this hybrid mattress. Combining the elevated support of a pocket sprung base with a layer of soothing ortho foam, bringing welcome relief for those whose sleep is disturbed from pain in the back, neck or joints. Underneath, each spring is individually encased for a nested effect which helps to reduce any partner disturbance when moving on the surface. A soft cover completes the mattress perfectly, with a cosy feel that's kind to skin.