Medium-Firm Silentnight King Size Mattresses

Kingsize (5')

Experience Sleep, Elevated. Drift into deep, restorative rest with our 7-Zoned Memory Foam Mattress, designed to embrace your body like a gentle, tailored hug. Create with advanced zoned support, it effortlessly relieves pressure on muscles and joints while maintaining optimal spinal alignment—all night long. Wrapped in a luxuriously soft, hypoallergenic knit cover, it offers a smooth, breathable surface that promotes a clean, healthy sleep environment. A balanced medium soft support and 20cm depth, this mattress is perfectly suited for all sleep styles—striking the ideal harmony between plush comfort and structured support. And for ultimate convenience, it arrives expertly rolled and boxed for seamless delivery—easily fitting through staircases and tight hallways. Effortless to unpack, effortless to enjoy.

Nice mattress. Comfy and reasonably priced.. Anonymous. GB. Mon Apr 27 2026

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. Mon Mar 16 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. Tue May 05 2026

Kingsize (5')

This Eco Comfort Pocket Sprung 800 Mattress springs with targeted zoned support where you need it most. A modern micro-quilted finish and soft knit cover offer a beautifully smooth sleep surface, finished to Silentnight’s high-quality standards. With a medium-firm feel, this mattress often suits people who change their sleeping position through the night. Featuring Silentnight's Eco Comfort Fibre, this mattress is right 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. The zoning in the Mirapocket spring system provides pressure relief for a comfortable night's sleep and edge-to-edge support for more personal sleep space. This mattress is hypoallergenic; designed to reduce the chance of an allergic reaction so you can sleep without worry in a relaxing environment.

Great mattress for the price! We have ordered two of these in the past. Not too soft or firm. Anonymous. Sat Apr 11 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.

Lovely mattress. Great night's sleep. Anonymous. Sat Dec 28 2024

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. Mon Feb 17 2025