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Are Simba mattresses worth it? This is our experts' honest review
“I see why they call it Simba, because it leaves you feeling like a lying king”

Simba is one of the most well-known mattress brands – it features heavily in our best mattress roundup – delivering sleep support to your door in a neat, portable cardboard box. And convenience isn’t the only selling point.
The brand has always prioritised sustainability, making its mattresses here in the UK with a focus on natural materials. You don’t just have to take Simba’s word for it either – the brand is a recognised B-Corp, an independent certification that means it has a more positive impact on the environment and among the communities in which it works. It’s the stuff of greener dreams.
Simba also offers a 200-night trial, a 10-year guarantee and will even take your old mattress away for free. But once one of its mattresses is unrolled and you’ve lugged it onto your bed frame, just how comfortable is it really?
That’s where the Good Housekeeping Institute can help. We enlisted the help of our panel to curl up with a Simba mattress for six weeks and report back on how it affected their shut-eye. At a glance, here’s how its mattresses stack up, but keep scrolling for our detailed reviews.
What do our readers say about Simba?
As part of our testing, we survey our readers to get their verdict on the leading mattress brands. We’ve heard from nearly 4,000 of you in total, and we make sure we've receive at least 50 responses per brand before we analyse the results.
For Simba, we received glowing feedback – nearly everyone was happy with their mattress, and most said they would buy it again, praising its supportive designs. Some people flagged changes over time though – either their mattress didn't rebound to its original shape after a while or they noticed a dip forming – so we recommend following the brand's rotation guidelines religiously.
In fact, this is a stipulation of the brand’s 10-year warranty: you must rotate the mattress once a month for the first three months you have it, then regularly every three to six months after that. Good news though – all the mattresses below have handles to help with this.
Read more: If you're trying to improve your sleep set-up, we've also tested the best bed sheets and duvet covers, the best pillows and the best mattress toppers.
Hannah is our homes editor, specialising in reviewing the latest kitchen appliances, cleaning products, mattresses and bedding, and crafting equipment. Hannah has written about hundreds of products, from air fryers to smoothie makers to pillows, and is committed to finding the most reliable and best value for money buys.
Hannah is also interested in sustainability in the home and has completed a course with the University of the Arts London in sustainable textiles, so she can help cut through the noise on what’s green and what’s not. Hannah has an MA in Magazine Journalism and has previously worked as a freelance lifestyle and women’s sports journalist, working for Stylist, Sky Sports and more.
Hannah has also previously worked in a florist and can normally be found caring for her house plants or sewing something new for her home or wardrobe.
Priyankaa is our sleep and wellness expert, specialising in expert-tested reviews and roundups on the latest health and fitness products. From walking boots to running machines, Priyankaa has written about hundreds of products and is passionate about providing in-depth, unbiased reviews. Plus, as an avid runner and gymgoer, she knows exactly what to look for when finding the right gymwear, fitness tracker or earphones.
Priyankaa has an MA in Magazine Journalism from Cardiff University and over five years’ experience in health and fitness journalism. Priyankaa has written for Stylist’s Strong Women Training Club, where she regularly wrote about diversity in the fitness industry, nutrition tips, training advice and her experience completing various fitness challenges. She has also written for a variety of publications including Business Insider, Glamour, Bustle, Metro, HuffPost UK, gal-dem and more. Outside of work, Priyankaa can usually be found trying out a new gym class, seeking out London's best eats or watching a Spanish TV show in a bid to keep up her language skills.
Blossom is passionate about finding the best home products and appliances for GH readers. As head of the homes testing team, she has led reviews across multiple categories, from pizza ovens, and smart plugs to portable fans and hobs. She enjoys delving into the intricacies of products and refining testing protocols to ensure we’re testing them against their claims. Her aim is to find the top-performing products on the market, to help take the hard work out of housework. Blossom’s most notable accomplishment in the lab has been toasting 528 slices of bread in her quest to find the best toasters money can buy. In her free time, she openly admits to being a music geek and indulges her creative side through crocheting, baking, singing and writing.


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