Medium-Firm Silentnight King Size Mattresses

Kingsize (5')

A great value mattress from Silentnight, designed to offer comfort, support, and pressure relief. Featuring Mirapocket technology with 1000 individual pocket springs, this mattress provides zoned support which is scientifically proven to ensure better spinal alignment through the night. With plump filling layers and a beautifully soft knitted mattress cover for extra comfort and a hypoallergenic finish. This mattress also features Silentnight's eco-comfort fibers, so it's good for you and good for the environment, as its comfort layer is made from 100% recyclable plastic bottles which offer breathability and enhanced comfort for a more refreshing night's sleep. A medium-firm comfort rating means this mattress is an excellent choice for those who switch between sleeping on their back and side.

So comfortable, perfect sleep every night. Samantha. Tue Mar 17 2026

Kingsize (5')

This pocket memory 1000 mattress is a quality mattress from Silentnight, combining all the essentials to provide comfort, support, and pressure relief through the night. Featuring Mirapocket technology with 1000 individual pocket springs, the mattress provides zoned support which is scientifically proven to ensure better spinal alignment through the night. A layer of "body-hugging" memory foam in this mattress helps to provide extra comfort, as it molds to your body contours for soothing pressure relief and a more peaceful night's sleep. Finished with a beautifully soft knitted, hypoallergenic mattress cover for a smooth sleep surface. This mattress provides a medium-firm feel, suited to those who switch between sleeping on their back or side.

Very nice. Delivery guys very efficient.. Anonymous. Wed May 06 2026

Kingsize (5')

Sustainable sleep has never been easier. Ideal for planet savers - this mattress is made with sustainable fibers for a breathable and refreshing sleep experience that doesn’t cost the earth. The mirapocket layer inside uses 1000 pocket springs to individually respond to movement and deliver individually tailored support.

Great mattress for kids room. Comfortable and fits perfect. Discounted so priced really well. Delivered fast.. Anonymous. Sat Aug 15 2026

Kingsize (5')

Simple comfort that helps you sleep soundly—without any hassle. The Silentnight Essentials Memory Mattress is designed to keep things simple—and seriously comfy. It features lightweight, durable open coil springs that move with you, giving your whole body the support it needs from head to toe. We’ve added a layer of memory foam that gently hugs your shape, helping to ease pressure on your muscles and joints while you sleep. It feels great—and it does great things for your body too. With 323 open coil springs evenly distributing weight, this mattress helps improve spinal alignment and relieve pressure in all the right places. The soft knit cover adds a cosy finishing touch, and the hypoallergenic materials help keep your sleep space fresh and clean night after night. It’s got a medium comfort feel—nice and balanced, not too soft and not too firm. A great all-rounder, especially if you’re a side sleeper. As comfy as it is affordable, the Essentials range is all about the basics done right. Designed with everyday comfort in mind and made to order right here in the UK, this mattress also comes with a 5-year guarantee—so you can sleep easy, night after night.

Good quality but probably should have ordered a firm or medium-firm as it has sunk in areas since purchase.. Natalie. Birmingham, GB. Tue Feb 18 2025

Kingsize (5')

This 800-pocket memory mattress features 800 individually responsive pocket springs combined with foam fillings to ensure overall body support and comfort. Each spring responds separately to body weight to offer pressure relief, while the soft knit cover provides extra comfort as you sleep. This mattress is enhanced with a body-contouring memory foam layer for additional tailored pressure relief through the night. This mattress offers a medium comfort feel, meaning it’s great for people who sleep both on their back and sides. Made in the UK by the UK's most trusted bed brand Silentnight.

Wasn’t sure what mattress to buy,but glad we got this one. It’s very firm so far after 4nights it’s comfy. Good buy. Rb. Exmouth, GB. Tue Jun 30 2020

King - (150 x 200 cm)

Our Just Snug mattress relieves pressure, and supports your spine, ensuring you experience your most comfortable night's sleep yet. The responsive Memory foam gently moulds to your body's contours, absorbing energy and relieving built-up pressure as you sleep, while the 1000 individual responsive pocket springs respond to your movements, resulting in premium comfort that's tailored to you. Finished with a soft-knit fabric which is hypoallergenic, plus it's rolled for convenience and easy to get up staircases. The 1000 individually responsive pocket springs in this mattress conform and adjust to your body weight, providing an edge-to-edge sleep surface and extra support for your hips, as well as enhanced spinal alignment. Working independently, the spring unit distributes weight evenly whilst responding to your movements throughout the night, resulting in premium comfort that's tailored to you. Designed with ease and convenience in mind and with fast delivery, our Just Snug mattress comes rolled and wrapped so you can easily take it to your room of choice.

Good product.quick delivery.thanks. Birgit. Epsom, GB. Mon Sep 29 2025

Kingsize (5')

This Silentnight 800 Pocket Pillowtop Memory mattress features 800 individually responsive pocket springs combined with foam fillings to ensure overall body support and comfort. Each spring responds separately to body weight to offer pressure relief, while the soft knit cover provides extra comfort as you sleep. This mattress is enhanced with a luxury memory foam pillowtop layer to provide extra pressure relief and cushioning around the hips and shoulders. This mattress offers a medium/firm comfort feel, which is generally great for people who sleep on their backs. Made in the UK by the UK's most trusted bed brand Silentnight.

Good product good delivery time. Alun. Swansea, GB. Thu Nov 10 2022

Kingsize (5')

Cocoon yourself in supportive comfort. Ideal for sink-in snoozers. Ideal for those who love that sink-in feeling at bedtime, this mattress is designed to gently hug you to sleep, molding with the contours of your body. Thanks to its memory layer, it offers soothing pressure relief and ultimate comfort. The Mirapocket layer inside uses 1000 pocket springs to individually respond to movement and deliver individually tailored support.

Good quality mattress. Very comfortable. Exactly as described and perfect for our Granddaughter’s bed.. Valerie. Royston, GB. Tue May 21 2024

Kingsize (5')

Boasting a traditional Bonnell spring system, this Bonnell memory pillowtop mattress offers comfort and support through the night. With sumptuous layers of foam fillings and a soft knit mattress cover for added comfort and a soft touch. This mattress is enhanced with a luxury memory foam pillowtop layer to provide extra pressure relief and cushioning around the hips and shoulders. This mattress offers a medium/firm comfort feel, which is generally great for people who sleep on their backs. Made in the UK by the UK's most trusted bed brand Silentnight.

One of the best matressss I’ve had Nearly four years old still perfect. Vivienne. Ormesby Middlesbrough, GB. Thu Mar 12 2026

King - (150 x 200 cm)

Our Just Breathe mattress provides superb support, breathability and comfort all rolled into one. Eco Comfort Fibres create a breathable layer, so you don't overheat in the night, combined with the support of 1000 zoned springs. These clever little fibres work alongside high-tech 3D fabric that provides extra ventilation and moisture regulation. Our Just Breathe mattress sleep surface is finished with a soft-knit fabric which is hypoallergenic The Just Breathe mattress is also rolled for convenience and easy to get up staircases. We work with partners such as the University of Central Lancashire to test all of our support units for spinal alignment, durability and quality. The 1000 individually responsive pocket springs in this mattress provide edge-to-edge zoned support and extra support for your hips, as well as enhanced spinal alignment. Combined with our Eco Comfort Fibre layer made with sustainable fibres, which are extra breathable and perfect if you get hot during the night. We've made sleep easier than ever. Designed with ease and convenience in mind and with fast delivery, our Just Breathe mattress comes rolled and wrapped so you can easily take it to your room of choice.

Really pleased with my mattress it is firm supports my back and hips value for money and a brand I trust. Winnie. Newcastle. Sat Mar 07 2026