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Super King Mattresses

Explore our extensive selection of super king size mattress options, designed to fit standard 6ft bed frames. This collection covers the largest standard UK mattress size (180cm x 200cm), organized by construction type, from traditional pocket sprung systems to modern hybrid and memory foam designs.

Ideal for couples seeking maximum personal space or taller individuals requiring extra legroom, these expansive sleep surfaces are selected to help minimize partner disturbance. Find specific solutions for different sleep requirements, such as the orthopaedic super king mattress for spine alignment for firm support, or a super king pocket sprung mattress engineered to reduce motion transfer and prevent "roll-together" during the night.

Navigate the range by comfort grade, material, and price point to match your specific preferences. Whether you require the contouring comfort of a super king hybrid mattress or a high-density foam model for pressure relief, each product page details spring counts, fill materials, and firmness ratings to assist your decision.

Hand-crafted in the UK, every 6ft super king mattress in this collection meets BS7177 safety standards. Mattress Depot supports your selection with a 100-night trial and a 10-year warranty on select models, ensuring you find the right fit for your sleep environment.

39 products

The Ultimate Super King Size Mattress Guide

Choosing a super king mattress is a long-term investment in comfort, space, and sleep quality. Use this guide to understand what to look for and which options best match your needs.

Key Takeaways:

Key Takeaways: Details
Maximum Space: A super king mattress offers 180cm of width, making it the best super king mattress for couples who value personal space.
Targeted Support: Options like the 2000 pocket spring super king mattress provide individualised support to prevent "roll-together."
Health Benefits: Choose an orthopaedic super king mattress for spine alignment if you suffer from morning stiffness or chronic back pain.
British Quality: All our mattresses are hand-crafted in the UK, meeting BS7177 safety standards for your peace of mind.

Comparison – Super King vs. Other Large Sizes

Choosing the right large-format mattress depends on your room size and sleep preferences. Below is a comparison of the largest sizes in the Mattress Depot range.

Feature King Size Super King Size
Dimensions (Metric) 150cm x 200cm 180cm x 200cm
Dimensions (Imperial) 5ft x 6ft 6in 6ft x 6ft 6in
Best For Standard Master Bedrooms Large Master Suites & Couples
Motion Isolation High Outstanding
Room Space Req. Min 10ft x 12ft Min 12ft x 12ft

Who Should Choose a Super King Size Mattress?

The super king size offers maximum space and premium comfort. Here are the most common use cases:

  • Couples: If you or your partner are restless sleepers, the motion isolation super king mattress technology ensures that one person's movement doesn't disrupt the other’s sleep.
  • Back Pain Sufferers: A super king mattress for back pain provides a wider surface area to find the optimal sleeping position, often featuring orthopaedic foam layers for pressure relief.
  • Families: For those weekend mornings when the kids (or pets) pile into bed, the 6ft width provides ample room for everyone to be comfortable.
  • Taller Sleepers: At 200cm (6ft 6in) long, our super king range offers plenty of legroom for taller individuals to stretch out fully.

Specifications & Dimensions Guide

Before ordering, confirm your bed frame size and room clearance to ensure the super king fits comfortably.

Size Name Metric (cm) Imperial (ft) Approx. Weight Ideal For...
Super King 180 x 200 cm 6ft x 6ft 6in 45kg - 60kg Master bedrooms with 180cm+ clearance

All our super king mattresses are designed to fit standard UK 6ft bed frames and divans.

Material & Construction Features

Super king mattresses are built in layers. Here is how each part supports comfort and long-term performance:

  • Pocket Spring Systems: Our 2000 pocket spring super king mattress uses individually encased springs that move independently. This provides tailored support to every contour of your body.
  • Hybrid Technology: A super king hybrid mattress combines traditional spring support with transition layers of reflex or memory foam, offering the best of both worlds: bounce and pressure relief.
  • Orthopaedic Foam: Specifically engineered for those seeking a super king mattress for back pain, our high-density foam layers promote neutral spine alignment throughout the night.
  • Breathable Covers: Every mattress is finished with a luxury, breathable fabric cover that is OEKO-TEX® certified, ensuring a chemical-free and temperature-regulated sleep environment.

Why Buy Super King Size Mattresses from Mattress Depot?

We manufacture our mattresses in-house, combining proven construction methods with modern materials for long-term comfort.

  • 20+ Years of Expertise: We have over two decades of experience in mattress manufacturing, with over 100,000 happy sleepers across the UK.
  • British Made Quality: Every 6ft super king mattress is designed and produced in-house in our UK factory, ensuring high standards and ethical craftsmanship.
  • 100-Night Mattress Trial: We are so confident in our quality that we offer a 100-night trial to ensure your new mattress is the perfect fit for your sleep style.
  • Direct-to-Consumer Value: By eliminating middlemen, we provide luxury hotel-grade mattresses at fair, honest prices without the retail markup.
  • Standard & Certified: Our materials are BS7177 and OEKO-TEX® certified, meeting strict UK fire safety and environmental standards.
  • 10-Year Warranty: We stand by our durability, offering a 10-year warranty on select models to protect your investment in better sleep.

How to Care for Your Super King Size Mattress

Proper care helps maintain comfort, hygiene, and long-term support.

  • Initial Setup: Once delivered, carefully unwrap your rolled mattress. Allow it to sit in a well-ventilated room for 4–24 hours to expand fully to its 6ft dimensions.
  • Rotation Schedule: To ensure even wear and longevity, rotate your mattress 180 degrees every two weeks for the first three months, then once every three months thereafter.
  • Cleaning Instructions: Use a soft damp cloth for spot cleaning spills. Avoid using harsh chemicals or saturating the fabric, as this can damage the internal foam layers.
  • Airing Out: Regularly strip the bedding and allow the mattress to air for a few hours. This helps dissipate moisture and keeps the sleep surface fresh.
  • Warranty Maintenance: Ensure your mattress is used on a supportive, compatible bed frame. Using an unsuitable base may void your 5-year warranty.

Frequently Asked Questions

A standard UK super king size mattress measures 180cm wide and 200cm long (6ft x 6ft 6in). This provides an extra 30cm of width compared to a standard king size, making it the largest standard mattress size available in the UK.

An orthopaedic super king mattress is usually the best choice for back pain. These mattresses use higher spring counts or high-density foam to maintain neutral spinal alignment and reduce pressure points.

A super king hybrid mattress combines pocket springs with foam layers such as reflex or memory foam. This provides traditional support alongside modern pressure relief for a balanced sleep experience.

Yes, a super king mattress must be used with a dedicated 6ft bed frame or divan base. Using the wrong frame can damage the mattress and reduce its lifespan.

Yes, Mattress Depot offers a 100-night mattress trial, allowing you to test the super king mattress in your own home before making a final decision.

A 2000 pocket spring system offers more individual points of contact with your body, improving weight distribution, reducing pressure points, and enhancing overall comfort.

Yes, many super king mattresses are delivered rolled and vacuum-packed, making them easier to move through hallways and staircases before expanding fully in the bedroom.