Product Description

The Simba Ultra King Mattress is designed with 11 layers of natural materials and advanced technology for exceptional comfort. It features 3,800 titanium alloy Aerocoil micro springs in the top layers, offering targeted pressure relief and reducing movement transfer. Below, 2,500 high carbon steel Aerocoil springs ensure maximum support and airflow. The FusionCool layer, a unique blend of kapok, wool, and bamboo, enhances freshness, while the dual Simbatex foam layers provide luxurious cushioning. The SupportCore base, with 1,000 pocketed springs, offers edge-to-edge support, and the breathable, removable cover with Stratos tech ensures easy care.

Simba Hybrid Ultra 11 Layer King Mattress, Medium/Firm 

£2599£1819
Firmness: Medium/Firm

Size:

Delivered within 3 working days. Tell me more >

This item comes with a 10 year guarantee

200 Night Sleep Trial

Protect your furniture for 6 years

Add to basket
Will it fit?

Simba

Award-winning Simba Sleep uses innovation and expertise to design high-tech, affordable mattresses, targeting the most common causes of poor sleep: overheating, aches and pains, and partner disturbance.

Aerocoil® Springs

Simba is the most five-star rated mattress brand in the world. Because their unique Hybrid® mattress technology is designed to feel perfectly comfortable to everyone, no matter their shape or sleeping style.

Simbatex® Foam with New HeatRelease® Strips

Simba’s innovative Simbatex® foam is cleverly designed to offer extra airflow compared to standard memory foam. New HeatRelease® strips use graphite technology, a natural material that helps move heat away from the body for a fresher sleep. This tech is exclusive to Simba in the UK.

Hybrid® Ultra Highlights

  • Luxury design. More of our signature tech than ever before, combined with high-performance natural materials.
  • Optimum support   Our highest ever spring count of 7,300 springs offers more support and pressure relief.
  • Spring count breakdown. Features 3,800 titanium alloy micro springs, 2,500 high carbon steel micro springs, 1,000 pocketed barrel springs
  • Cooler sleep.  Open-cell Simbatex® foam and new HeatRelease® tech provides more cooling airflow than ever.
  • 100% edge-to-edge support.  SupportCore™ base prevents roll-off at the sides.
  • Breathable cover. Soft, knitted cover with zip-off top for washing or replacing.
  • Made in the UK.  With UK sourced materials, in zero-waste factories.
  • Uninterrupted sleep. Our maximum [AD1] Aerocoil® spring count ensures your partner’s movements won’t wake you.
  • Explore the range

    Customer Homes

    Dimensions & Details
    Width
    :
    150
    cm
    Depth
    :
    200
    cm
    Height
    :
    34
    cm
    Details
    Assembly
    Fully Assembled
    Materials
    A zip-off Stratos® cool-touch cover tops the FusionCool™ blend of wool, charcoal-infused bamboo and kapok. Beneath sit two graphite-infused Simbatex® layers, a latex and coconut PureLift™ blend, Aerocoil® springs and a CertiPUR® foam base.
    Feature or function
    Silky-soft cushioning sits at the very top of the Ultra in the FusionCool™ layer, a 250g blend of wool, charcoal-infused bamboo and kapok. Naturally breathable, it lets air flow freely and prevents heat build-up, keeping you cool and dry all night.
    Mattress filling
    Eleven layers make up the Ultra, with a springy PureLift™ blend of latex and coconut fibre adding elasticity, Aerocoil® micro springs arranged across thirteen supportive zones, and CertiPUR® foam layers giving structure, airflow and a stable base.
    Mattress spring count
    This mattress features 7,300 springs, including Aerocoil® micro springs for pressure relief and airflow, plus a SupportCore™ base with pocketed barrel springs for edge-to-edge stability and lasting support.
    Mattress feature
    UK-exclusive HeatRelease™ graphite strips draw excess warmth from your body all night, keeping you up to 4.2°C cooler. Paired with an exclusive double layer of graphite-infused Simbatex® foam, the ideal sleep temperature holds for up to eight hours.
    Mattress firmness
    Experience the perfect balance of comfort and support with our medium-firm mattress, designed to provide just the right amount of softness while maintaining excellent spinal alignment.
    Manufacturer guarantee
    10 Years
    Please note
    Rotate monthly for the first three months, then every three months thereafter. Mattresses are vacuum packed for ease of delivery. 4.2°C based on ISO accredited lab testing of the upper foam layer, with and without HeatRelease™.
    Firmness
    Medium/Firm
    Care
    Zip off the top cover and machine wash at 40°C on a reduced spin cycle, then line dry. The inner cover can be slept on meanwhile. Do not bleach, tumble dry, iron or dry clean. Clean the base fabric with a soft, damp cloth using circular motions.
    Disclaimer
    We're happy to accept returns for mattresses which are either unused and unopened, found to have a manufacturing defect, or returnable under the conditions of a supplier’s sleep trial or comfort guarantee offer.
    SKU
    ULMA1520MATT
    Delivery
    Delivery charge: FREE

    ●   This item will be delivered boxed.
    ●   If your item is in stock (or once it comes into stock), our trusted delivery partner will send you a tracking link with a delivery update after your order has been placed.
    ●   We deliver to UK Mainland only (this excludes Ireland, Northern Ireland and Islands).
    ●   There are some out of area postcodes where delivery may take a little longer, please see our delivery page for more information.
    ●   For hygiene reasons, mattresses and pillows can only be returned if they have been unused and unopened or have a manufacturer fault.
    Our locations

    0 stores found

    This product is not available in any store.

    Care information
    Warranty & Returns