Simba Mattress Problems Explained

Simba Mattress Problems Explained

Simba sells one of the most popular hybrid mattresses in the UK. The company proudly boasts to be the “world’s most five-star reviewed brand”. Over the years the Simba mattresses have received over 180,000 five star reviews from satisfied customers.

However, there are others who have been dissatisfied with their new mattress and have experienced some problems after sleeping on it for some time.

In this guide we’ll go over the pros and cons of the Simba mattress, so you can decide if it’s worth purchasing or not?

1. My Simba Mattress Is Sagging/Dipping

There are three main reasons why a Simba mattress might begin to sag or dip in the middle, after it has been used for several months. They include: being used by person weighing more than 18 stone (114kg), not rotating the mattress, and lastly using unsuitable bed base. 

  • Under Simba’s terms and conditions, the mattress should not be used by an individual weighting more than 18 stone or 114kg. 
  • Make sure you rotate “head” to “toe” (but don’t flip over) the mattress at least once every month during the first three months of using it, and then once every six months after that. 
  • Using an unsuitable bed foundation, with unevenly placed slats, or broken slats for example. 

When Simba memory foam mattresses are placed on uneven or unsuitable sleep-surfaces, it can cause them to dip in accordance with the poor foundation.

The sagging can usually be resolved by addressing your sleep surface. If you’re sleeping on a solid or sprung slatted base, you need to make sure that the gap between the slats is not greater than 7.5cm or 3 inches, and that they are evenly spaced. If this is not the case, consider investing in a new base for your bed. You may want to get the Simba bed frame, which is compatible with all their mattresses.

Here is what two customers have said about the Simba mattress, according to their experience:

simba mattress sagging customer complaint problem

Simba's 10 Year Guarantee: What Does it Cover?

Every Simba mattress is covered by the company’s 10 year guarantee. Under this guarantee, you can seek to have your Simba mattress replaced with a new one if it meets certain criteria. 

The company has given specific measurements of how large the dip should be and how much time should have passed since sleeping on the mattress. Below you can see the “Dip Tolerance” and “Time from delivery date”. 

simba mattress sagging warranty coverage

For example, if you’ve been using your Simba mattress for year and half (18 months), and you see a dip that is more than 35mm or 3.5cm, then you should contact Simba’s customer support and inform them that your mattress has an indentation or dip greater than what’s been specified in their Ten Year Guarantee Policy. 

Simba’s customer support will inform you what information you need to provide (for example: photos, proof of purchase, etc.) so you can have this problem resolved. 

Read Simba’s ten year guarantee here

2. My Simba Mattress Is Too Hot

People who aren’t used to sleeping on memory foam mattresses will often complain that they’re much too hot for their liking. Memory foam mattresses usually trap heat from your body in order to mould around your body’s contour, and provide that magnificent sense of weightlessness.

Simba has developed their own Open Cell Foam (Simbatex), which has graphite for cooling and is designed not to trap heat. Every Simba mattress has a layer of Simbatex and also a breathable sleep cover on top. Most importantly, every mattress has a layer of springs, which allow air to move freely and for heat to be released.

If you’re worried about overheating at night, consider purchasing the Simba Hybrid Pro or Simba Hybrid Luxe which have an additional layer of wool, which is known for regulating temperature very well. 

3. My Simba Mattress Smells Odd

When you take your Simba mattress out of the box, you might notice a strange and unpleasant smell. And what’s worse, it probably won’t go away immediately. But don’t panic! This is perfectly natural for all memory foam mattresses.

It’s actually a process called ‘off-gassing’ and it’s not an odour exclusive to Simba’s range. Although a little unpleasant at the start, the smell will reduce over time and you will soon forget about it.

If the process of off-gassing is causing you issues, your mattress just needs time to breathe. If possible, leave it in another room for around a week. You can then return to sleeping on it when the worst of the off-gassing is over.

Tip: The foam in Simba’s mattresses is CertiPUR certified, meaning that it’s free from any harmful chemicals and pollutants.

4. My Simba Mattress Is Too Firm/Too Soft

Firmness rating is one of the most subjective points for any mattress. If you spend time reading through mattress reviews, you will find people complaining they’ve been missold a mattress because it’s too firm or too soft, and not as described.

Be mindful that firmness ratings are intended as a guide only. Simba provide a helpful firmness scale, with their hybrid scoring a 6/10 and therefore being considered as medium/firm. While this should be good for most sleepers, it’s not going to be ideal for everyone.

Tip: If you like sleeping on an extra firm mattress, chances are that Simba might not be right for you. Alternatively, check out our guide on the best extra firm mattresses.

One of the best things about buying from Simba is that they offer a 200-night sleep trial period. This means you have more than half a year to try your mattress, before deciding if it’s right for you or not. Be sure to make the most of it, and send your mattress back if you’re having any issues!

When Can I Sleep On My New Simba Mattress After Unboxing It?

simba mattress unpleasant smell

After you receive your Simba Mattress, remove all packaging and unroll it on your bed or a flat surface. You can sleep on it within three to six hours after unpackaging.

However, it may take up to 72 hours for the mattress to expand completely to its full depth. For example, the Simba Hybrid is 25cm deep, the Simba Hybrid Pro is 28cm deep, and the Simba Hybrid Luxe is 31cm deep. 

What To I Do If I’m Unhappy With My Simba Mattress?

As already mentioned, if you’re unhappy during your 200-night sleep trial period, simply arrange for your mattress to be returned. Given their positive reviews and dedication to customer service, you should have no issues when it comes to returning your mattress.

Keep in mind that the 200 night trial period starts from the day the mattress arrives to your home. Also, it’s suggested that you sleep on it for at least 30 nights before you can arrange a return. Sleeping on your new mattress for at least 30 nights will help you to fully test it out and determine if it’s right for you or not. (See a list of other mattress companies that offer a sleep trial here.)

If issues begin to emerge outside of your 200-night sleep trial period, you have a Simba ten-year guarantee to take advantage of. Be sure to check the terms of the guarantee and see if your issue is covered by warranty.

You could always get in touch with one of Simba’s customer service representatives if you’re not sure, as they will be very happy to help you out.

Lastly, don’t forget to read all customer reviews before you make your decision. Luckily on Simba’s website you can find over 89,900 unbiased reviews from real customers. Reading the 5 star reviews, as well as the 1 and 2 star reviews will give you a complete picture of the pros and cons of the Simba mattress. 

However, keep in mind that mattress comfort is a very subjective thing, and it’s not always possible for a mattress to be liked by everyone. Read all Simba mattress reviews here

Disclosure – independently reviews and ranks products, by thoroughly researching them. We may receive a commission when a purchase is made through our links, at no cost to our readers.

Prices and/or ratings mentioned in this article are accurate as of February 9, 2022, please click on link of each product for up do date prices.