Simba vs Casper: Which Should You Buy?

That leaves Simba, which is still trading and one of the most heavily advertised mattress brands in Britain.

So this page does two things: it explains what Simba actually is, since the word hybrid does a great deal of work in its marketing, and it sets out what else the money buys.

What Simba's hybrid construction actually is

This is the part worth getting right, because both brands used the word hybrid and it covers very different things.

Simba's Aerocoils are 25 millimetre micro-springs in the comfort layer, sitting on a foam base. That is a spring layer, and it is not a spring core. What holds your hips up at 3am is foam.

Compare that with a deep pocket sprung construction: Otty's Original has a 16 centimetre spring core, which is the full depth of the support structure rather than a band near the surface.

Both are sold as hybrids. Ask how tall the springs are and what is underneath them, every time.

Simba's range, and where the value sits

The value in the range is not on that list at list price. A refurbished Hybrid Ultra has listed at around £699 against £1,749, which is more mattress than anything else Simba sells at a price it sells nothing else at.

How Simba scores

Scored against the mattress it most directly competes with rather than against a brand that has left, because that is the comparison that can still change what you buy.

What this should teach you about buying a mattress

A mattress is an eight to fifteen year purchase and a young mattress brand is frequently a much shorter proposition. That mismatch is the lesson here.

A guarantee is only worth the company behind it. A ten year guarantee from a brand that is liquidated in year three is worth nothing, whatever the certificate says.

Your statutory rights sit with the retailer, not the manufacturer. Under the Consumer Rights Act 2015 you can claim against whoever sold it to you for up to six years in England, Wales and Northern Ireland, and five in Scotland. That is why buying through an established third party splits the risk, where buying direct concentrates it in one company.

Check the trading entity at Companies House. It is free, it takes two minutes, and it tells you how long the company has traded and whether accounts are filed.

Keep the proof of purchase. After the first six months the burden of proof shifts to you.

None of this means avoid new brands. It means weigh the guarantee at what it is actually worth, and prefer construction you can verify today over promises about year eight.

Price and the discount

Simba discounts close to permanently, so the crossed-out price is a statement about Simba's own pricing. The Competition and Markets Authority secured undertakings from Simba in August 2024 requiring that was and now prices reflect genuine previous selling prices.

Note the cash price and compare it against what else the money buys today. At around £700, that comparison is a refurbished Hybrid Ultra or an Otty Original with change left over.

What to buy instead

Where to go next

How this list is made, and who made it

Who writes this. Kyle Klinkradt has worked in the mattress and bedding industry for over ten years across retail, distribution and brand partnerships, and has handled, sold or assessed products from every major UK bed-in-a-box brand. Every review on this site is written by one person, so the scores mean the same thing from page to page.

What the assessment is. Construction specifications against what they physically do: spring height and where in the mattress it sits, spring count for the size, gauge, whether the base is sprung or foam, foam density where it is published, comfort layer depth and material. Then the commercial terms that decide what you are actually buying: trial against returns policy, guarantee length against the company's UK trading history at Companies House, and the regulatory record.

What it is not. This is not a laboratory. I do not publish pressure-mapping data or claim to have slept eight years on every mattress here, because nobody has and pages that imply otherwise are not telling you the truth. Where a judgement rests on construction rather than long-term use, the review says so.

What gets a product removed. Leaving the UK market, a specification change that makes the review inaccurate, or a corrected fact. Brands that have withdrawn are kept on the site with the score removed rather than quietly deleted, because people still search for them.

See editorial independence, corrections and the author page.

How this comparison is made

Both products are scored on the same criteria used across this site: support, pressure relief, motion isolation, edge support, temperature, durability and value. The scores in the table are the ones on each product's own review page, and they do not change to suit a comparison.

Where a brand publishes a specification, it is quoted. Where it does not, that is stated rather than estimated, because an absent specification is itself information: foam density and spring count for your own size are the two most commonly withheld.

Prices move constantly in this category and both brands discount heavily, so cash prices are given as a guide and the comparison rests on construction rather than on a percentage off.