Simba vs Sleeping Duck

Simba and Sleeping Duck mattresses are part of the new revolution in advanced foam mattresses. In this guide, we'll be comparing the two brands, and seeing which is more suitable for your needs.

Simba Mattress Sleeping Duck Mattress

Prices and sizes

Both mattresses come in a range of UK and EU sizes, with Sleeping Duck's largest size being a super king. Simba's range goes up to an Emperor mattress at 200cm by 200cm. Both manufacturers sell their mattress for very similar prices.


The Simba and Sleeping Duck mattresses both have five layers. However, the Sleeping Duck mattress is unique in that it offers an interchangeable top layer. This can be set to either a medium or hard firmness rating, or even half and half. Let's take a look at the layers in more detail:


  • Cover – A two-tone white and grey cover, made from 100% polyester.
  • Top Layer – A 5cm latex foam layer, designed to provide most of the cooling, bounce and comfort.
  • 2nd Layer – A 2cm layer of foam encased microcoils, working to provide contour to the sleeper.
  • 3rd Layer – A 3cm memory foam layer, which acts as a transitional layer between the foundation and microcoils.
  • Bottom Layer – A 15cm layer of support foam, providing most of the shape for the mattress.

Sleeping Duck

  • Cover – A two-tone white and grey cover, made from a blend of rayon from bamboo on the top and polyester side panels. The cover is also completely removable.
  • Top Layer – A 1.9cm latex foam layer, designed to provide most of the cooling, bounce and comfort.
  • Second Layer – A 1.9cm memory foam layer, which works with the top layer to create pressure relief and contouring.
  • Third Layer – A 6.4cm of polyfoam, to aid pressure relief and provide support. The polyfoam also acts as a transitional layer.
  • Bottom Layer – A 21.6cm of pocketed coils, providing deep compression support and the foundation for the mattress as a whole.

The Simba mattress is 25cm in depth, whilst the Sleeping Duck is a whopping 30.5cm in depth. As you can see, they are constructed in a very different fashion.

Firmness, Comfort and Support

The Simba mattress has a medium firmness rating. As discussed previously, the Sleeping Duck mattress can have either a medium or hard firmness, or half and half. Let's look at the pros and cons of each mattress in this department.


  • Due to its top layer of latex, the Simba is both responsive and comfortable, and is highly breathable.
  • The layer of microcoils help to create a good level of sinkage without any pressure points being created.
  • The microcoils also help to add a little more bounce than you would normally get from a foam mattress.
  • However, if you're a stomach sleeper you may find that the mattress tries to contour around you too much.

Sleeping Duck

  • The Sleeping Duck is notable for its ability to keep sleepers cool and does not retain any heat.
  • The layer of microcoils help to create a good level of sinkage without any pressure points being created, and the 5-zone system means that the mattress adapts quickly to any sleeping position.
  • The hybrid design of the mattress means that the mattress has a good level of bounce, as well as good motion transfer.
  • The contour and hug of the Sleeping Duck provides a great mix of sinkage, contour and support.

Other factors

Both companies come with a 10-year guarantee and a 100 night trial period. If you're not satisfied, both will offer a full refund. The mattresses both have free delivery and arrive compressed in a box.

Which mattress is best for me?

Both mattresses offer appealing factors, but here are some points to consider when deciding which best meets your requirements.


We'd recommend this mattress if:

  • You want a medium to medium firm feel.
  • You want a hybrid mattress. The Simba uses latex, microcoils, memory foam and a 7-zoned support foam. All this makes for a responsive mattress with good support.
  • You sleep on your side or back and want a mattress that responds to pressure in a faster manner than most foam mattresses.
  • You want good edge support. Because of the extra layer of foam around the perimeter of the coils, the Simba maintains its support around the edges.

Sleeping Duck

We'd recommend this mattress if:

  • You want to be able to choose between medium and firm mattresses, as well as having the chance to trial both options.
  • You want a hybrid mattress. The hybrid design provides great support, cooling, edge support, response and bounce and is still very reasonably priced.
  • You want a cooler mattress that stays cool and comfortable throughout the night.
  • You want a supportive mattress that adapts quickly and doesn't allow any pressure spots to form.

You can view more information about these mattresses below.

Are you interested to learn more about Simba? Read our Simba Mattress review here.