REM-Fit® 3000 Supreme Hybrid Mattress

SupportVery good CoolingVery good Pressure reliefExceptional From our customer data • 68,620 UK sleepers Side sleepers are the single biggest group choosing a medium mattress. 54.6% of medium-mattress shoppers in our data sleep on their side - the highest proportion of any firmness group. The 3000 Supreme's medium tension (6/10) is built to relieve shoulder and hip pressure while keeping the spine properly aligned. Like all REM-Fit hybrid mattresses, the open-cell memory foam layer actively circulates air through the night - so it stays breathable even for warmer sleepers. See full data ▼ 77% report back pain 84% want temperature regulation 72% want motion isolation See our full sleep data → Medium tension (6/10) - balanced comfort for most sleepers 3000 dual-layer pocket springs - zoned, responsive support Pressure-relieving open-cell memory foam - cushions hips and shoulders Encapsulated edge support - no roll-off, full use of the sleeping surface Partner motion isolation - pocket springs move independently for undisturbed sleep Old mattress removal - available at checkout 100-night risk-free sleep trial 15-year guarantee Free 2-5 day delivery The REM-Fit 3000 Supreme is a medium tension hybrid mattress built for side sleepers and anyone who needs genuine pressure relief without sacrificing support. 3000 dual-layer pocket springs work in tandem with pressure-relieving open-cell memory foam to cushion hips, shoulders and joints, while zoned support keeps your spine correctly aligned throughout the night. Who is it for? Designed for side sleepers, lighter sleepers and those who experience pressure build-up at the hips or shoulders. At medium tension (6/10), it offers a balanced feel that suits most body types and sleeping positions, and is rated up to 20 stone per sleeper. What makes it different? The dual-layer spring system gives the 3000 Supreme a more responsive, supportive feel than a standard single-layer pocket spring mattress. Combined with open-cell memory foam that actively encourages airflow, it sleeps cooler than traditional memory foam alternatives. Formerly: 400 Elite Hybrid Mattress 3000 Supreme sizes and dimensions The 3000 Supreme is available in ten sizes. Every one is 25cm deep and carries the same 3000 dual-layer pocket spring construction, so the medium-tension feel is identical whichever size fits your room. See all sizes and dimensions+ Size Dimensions Single mattress 90 x 190cm (3'0" x 6'3") Small double mattress 120 x 190cm (4'0" x 6'3") Double mattress 135 x 190cm (4'6" x 6'3") King size mattress 150 x 200cm (5'0" x 6'6") Super king mattress 180 x 200cm (6'0" x 6'6") Also available in UK small single (75 x 190cm), long small single (75 x 200cm) and EU single, double and king sizes - choose yours from the size menu above. Frequently asked questions Is a medium mattress good for side sleepers?+ Yes, medium tension is one of the best choices for side sleepers. A medium feel like the 3000 Supreme's 6/10 lets the hips and shoulders sink in just enough to relieve pressure while keeping the spine aligned, which is why side sleepers are the single biggest group choosing a medium mattress in our customer data. If you sleep mainly on your back or front, or want firmer support, the 4000 Ortho Elite is the better fit. What is the difference between the 3000 Supreme and the 4000 Ortho Elite?+ Both are hybrid mattresses built for different needs. The 3000 Supreme is medium tension (6/10) with 3000 dual-layer pocket springs, designed for side sleepers and balanced pressure relief. The 4000 Ortho Elite is a firm orthopaedic mattress (9/10) with 4000 dual-layer springs, built for back and front sleepers and those who need corrective back support. Choose the 3000 for a softer, pressure-relieving feel, or the 4000 for firm, orthopaedic support. What are dual-layer pocket springs?+ Dual-layer pocket springs use two layers of individually pocketed springs rather than one, which gives more responsive, zoned support and a more stable feel than a standard single-layer pocket spring mattress. In the 3000 Supreme this works alongside open-cell memory foam to cushion the hips and shoulders while keeping the spine supported. Is the 3000 Supreme suitable for couples?+ Yes. Its pocket springs move independently, so movement on one side of the bed is absorbed rather than transferred across, which helps couples sleep undisturbed. Encapsulated edge support also means you can use the full width of the mattress without roll-off. It is available up to super king and rated to 20 stone per sleeper. Does the 3000 Supreme sleep cool?+ It is designed to. The open-cell memory foam actively circulates air rather than trapping heat the way traditional memory foam can, helped by the pocket spring layers. That makes it a better option than an all-foam mattress if you tend to sleep warm, and you can pair it with our Tencel Cool Protector for an even cooler setup.