Your Cart

Your cart is currently empty.

Shop Now
Pay Now: , sale price: £0.00 OR Payments from: £0.00 per month

Goes like a dream with


King Size Mattress Toppers

Is your current mattress falling short on comfort? A king size mattress topper from Simba could help. Designed to sit on top of your mattress, all our king size mattress toppers feature Simba’s unique and award-winning mattress technology to provide the cool, comfortable support you need.

Topper, King

comfort boost

Topper, King

  • 4 Layers

  • 2500 Springs

  • 6.5cm Depth

Or £27.41 monthly
Simba Hybrid® Essential Mattress Topper, King
  • 4 Layers

  • 1500 Springs

  • 6.5cm Depth

Or £21.58 monthly
refurbished Simba Mattress Topper  Refurbished, King
  • 4 Layers

  • 2500 Springs

  • 6.5cm Depth

  • 100% tested, sanitised & certified by Simba

Or £15.08 monthly
Sold out
refurbished Simba Hybrid® Essential Mattress Topper  Refurbished, King
  • 4 Layers

  • 1500 Springs

  • 6.5cm Depth

  • 100% tested, sanitised & certified by Simba

Sold out

  • Benefits of using a king size mattress topper

    After a few years of use, generic mattresses can start to get tired, losing their support and responsiveness. Using a king size mattress topper is a smart solution to this common problem. Benefits include:

    ● Extends the lifespan of your mattress - avoiding the costs of buying a new mattress while also reducing your environmental footprint
    ● Experience various comfort and support features of a Simba mattress topper
    ● Ideal for taller people and couples who find mattresses alone don’t provide all the support they need
    ● Easier to clean, Simba mattress toppers have a removable cover that can be washed

  • Why choose a Simba mattress topper?

    Our mattress toppers allows you to experience all the innovative features of a Simba mattress and our king size mattress topper range works with our own mattresses, as well as those of other brands (and even airbeds or pull out beds).

    We’ve engineered our mattress toppers in this size to bring you unique Simba innovations:

    Clever technology: We’ve packed our king mattress toppers with several smart Simba features to help you sleep better. These include our high-tech springs to provide greater support to your body, clever temperature control thanks to our open cell foam, and an anti-slip base to give you a secure sleep.
    Good for the planet: Simba mattress toppers in a king size have a lower carbon footprint (manufacturing takes place in the UK), and we use SimbaPure® foam which is free of CFCs, TCPPs and other hazardous chemical products. All materials used in our toppers are recyclable (coming primarily from sustainable sources, and we offer carbon neutral delivery as well as a recycling service when you buy a new mattress or topper from us.
    Flexibility: A Simba mattress topper works with all kinds of king size mattresses. They’re easy to store and carry, and their elastic straps mean they attach securely to the base below.
    Risk free shopping: Our unique, sprung mattress toppers feature a 365-night trial, free returns and a 10-yr guarantee.

  • What size is a king size mattress topper?

    Simba king mattress toppers measure: W150cm x L200cm x D7cm

    We also provide single mattress toppers, small double mattress toppers, double mattress toppers and super king size mattress toppers.

  • King size mattress topper materials

    Our engineers select sustainably sourced and highly performant materials in our king size mattress toppers, including:

    ● SimbaPure® foam
    ● Pocketed Aerocoil™ springs

    Simba mattress toppers are made in the UK using 100% recyclable materials; when your mattress topper is at the end of its life, we can remove and recycle it for you when you buy a new mattress from us (and for a small fee). Furthermore, Simba packaging is 60% recycled and the rest comes from approved FSC sources.

  • How to wash a king size mattress topper

    Washing a Simba mattress topper is very easy. Start by unzipping the white sleep surface (only the top half), then pop it in the washing machine on a 40°C spin (maximum). You can also tumble dry it on a low setting.

Happy Sleepers

We rest better when we know your honest opinion of us. Check out reviews from Simba sleepers below.


Subscribe to our newsletter. We’ll keep you up to date with all the latest Simba news & offers.

By entering your email address, you agree to our T&Cs, privacy and cookie policies