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Double Mattresses

Browse our range of double mattress options, including standard UK 4ft6 double mattress sizes designed to suit everyday bedrooms, guest rooms, and shared sleeping. This collection is organised to help you compare popular builds side by side, whether you prefer the responsive feel of a double pocket sprung mattress, the balanced comfort of a double hybrid mattress, or a foam option for deeper contouring.

A double mattress can work well for couples who want less partner disturbance, solo sleepers who want extra space, and anyone looking for a supportive upgrade. If you’re dealing with aches or stiffness, you’ll also find choices such as an orthopaedic double mattress and models aimed at those searching for a double bed mattress for back pain.

To narrow things down, start by choosing your preferred mattress type, then consider firmness (such as a medium firm double mattress), temperature control, and motion isolation. Many models are also available as a double mattress in a box for simpler delivery and setup.

Mattress Depot designs and makes mattresses in the UK, with clear specs on each product page to help you choose confidently.

53 products

The Ultimate Double Mattress Buying Guide

Choosing a new sleep surface is a long-term investment in your health. To help you find the best double mattress for couples or the perfect solution for a guest room, keep these key takeaways in mind:

Key Takeaways:

Key Takeaways: Details
Standard UK Dimensions: A standard double measures 135cm x 190cm (4ft6" x 6ft3"), making it compatible with all standard UK double bed frames.
Support vs. Comfort: While a double bed mattress for back pain often requires a firmer support core, the top comfort layers should still provide pressure relief for your shoulders and hips.
Motion Isolation is Key: For couples, choosing a hybrid or pocket sprung model reduces "roll-together" and ensures one partner's movement doesn't wake the other.
British Craftsmanship: Buying direct from a UK manufacturer like Mattress Depot ensures your mattress meets strict BS7177 safety standards and supports local industry.

Comparison – Choosing the Right Double Mattress Type

Different sleepers require different technologies. Use the table below to compare the primary types of double mattress options available in our collection.

Feature Double Pocket Sprung Double Hybrid Double Foam (Reflex/Memory)
Primary Benefit Targeted support & airflow Best of both worlds Maximum pressure relief
Feel / Response Traditional bounce Balanced & adaptive Contouring & "hug"
Motion Transfer Very Low Minimal Zero
Best For Hot sleepers & traditionalists Couples & restless sleepers Back pain & side sleepers

Who Should Choose a 4ft6 Double Mattress?

The double size is incredibly versatile, serving a variety of household needs and sleeper profiles:

  • Couples: It is the standard choice for partners sharing a bed, providing enough individual space while fitting comfortably into average-sized UK bedrooms.
  • Solo Sleepers: If you enjoy extra room to stretch out, upgrading from a single to a 4ft6 double mattress offers a luxury sleep experience.
  • Back Pain Sufferers: A double bed mattress for back pain, particularly in medium-firm or orthopaedic tensions, helps maintain spinal alignment throughout the night.
  • Guest Rooms: A double is the most practical choice for a spare room, ensuring you can accommodate two adults comfortably when needed.
  • Teenagers: As children grow, a double mattress provides a future-proof sleep solution that lasts well into their young adult years.

Double Mattress Specifications & Dimensions

Size Name Metric (cm) Imperial (ft/in) Ideal Room Size (Min) Best For...
Double 135 x 190 cm 4ft6" x 6ft3" 9ft x 10ft Couples, Guest Rooms, Adults

Double Mattress Firmness & Feature Guide

Selecting the correct firmness is essential for comfort and posture. Our medium firm double mattress options are the most popular as they cater to the widest range of body types.

Sleeping Position Body Weight <70kg Body Weight 70-95kg Body Weight >95kg
Side Sleepers Medium Medium Medium-Firm
Back Sleepers Medium Medium-Firm Firm / Orthopaedic
Stomach Sleepers Medium-Firm Firm Firm / Orthopaedic

Materials & Construction

Our mattresses are designed with a layered approach to ensure longevity and comfort. At Mattress Depot, we use OEKO-TEX® certified materials to guarantee safety and quality.

  • The Support Core: Depending on the model, this consists of high-density reflex foam or individual pocket springs. The double pocket sprung mattress uses springs housed in fabric pockets to move independently, contouring to your body shape.
  • Comfort & Cooling Layers: We integrate innovative layers such as Cool Blue foam or Memory foam. These materials are engineered for pressure relief, helping to soothe joints and prevent tossing and turning.
  • The Fabric Cover: Every 4ft6 double mattress is finished with a breathable, hypoallergenic cover. These fabrics are designed to promote airflow, keeping the sleeping surface fresh and hygienic.
  • The "In-a-Box" Technology: Our double mattress in a box range uses precision compression technology, allowing us to roll the mattress for easier delivery without damaging the internal components.

Why Buy a Double Mattress from Mattress Depot?

When you choose Mattress Depot, you are buying directly from the people who design and build your bed.

  • British Manufacturing Excellence: We are a family-run British manufacturer with over 20 years of experience, handling everything in-house to ensure the highest standards.
  • 100-Night Mattress Trial: We want you to be sure. Enjoy a 100-night trial to test your new double mattress in the comfort of your own home.
  • Factory Direct Value: By eliminating middlemen, we provide luxury comfort and premium materials at fair, honest prices.
  • Certified Safety: All our materials are BS7177 and OEKO-TEX® certified, ensuring they are ethically sourced and fire-retardant.
  • Free UK Delivery: We offer fast, free UK delivery on our rolled mattresses, bringing restorative sleep straight to your doorstep.
  • 10-Year Warranty: We stand by our craftsmanship, offering a 10-year warranty on select models for total peace of mind.

How to Care for Your Double Mattress

Proper care ensures your mattress maintains its support and comfort levels for its entire lifespan.

  • Unpacking and Expansion: Your double mattress in a box should be unpacked within 1 month of delivery. Allow it to air and expand for 24–48 hours in a well-ventilated room before use.
  • Regular Rotation: To prevent dips and ensure even wear, rotate your mattress 180 degrees every two weeks for the first three months, and every three months thereafter.
  • Use a Protector: Always use a high-quality mattress protector to shield the fabric from spills, sweat, and allergens, which helps maintain the hygiene of the foam and springs.
  • Cleaning Instructions: If a spill occurs, spot clean only with a damp cloth and mild detergent. Do not soak the foam or use harsh chemicals, as this can damage the internal structure.
  • Proper Support: Ensure your double bed frame has a sturdy base. If using a slatted frame, ensure the gaps are not wider than 7.5cm to provide consistent support across the mattress.

Frequently Asked Questions

A standard UK double mattress measures 135cm wide by 190cm long (4ft6” x 6ft3”). This size comfortably fits two adults and works with all standard UK double bed frames.

Pocket sprung and hybrid double mattresses are ideal for couples, as they minimise motion transfer and prevent one partner’s movement from disturbing the other during sleep.

A medium firm double mattress offers a balanced level of comfort and support, making it suitable for side, back, and stomach sleepers. It’s the most versatile option for couples with different sleep preferences.

Yes. A double mattress designed for back pain, such as an orthopaedic or medium-firm model, helps maintain proper spinal alignment and evenly distributes body weight to reduce pressure points.

Most rolled double mattresses expand to around 90% of their size within a few hours. Full expansion and comfort are typically achieved within 24–48 hours.

A high-quality double mattress should generally be replaced every 7 to 10 years, or sooner if you notice sagging, discomfort, or reduced support.

Yes. Our double mattresses are made using hypoallergenic and OEKO-TEX® certified materials, helping to reduce allergens such as dust mites and making them suitable for allergy sufferers.

Yes. Mattress Depot offers up to a 10-year warranty on selected double mattress models, covering manufacturing defects and ensuring long-term peace of mind.