Tossing and turning all night, waking up with nagging back pain, or getting overheated midway through the night can ruin your productivity and well-being. Finding a bed-in-a-box that balances firm back support with cushioning plushness is easier said than done.
In this comprehensive OTTY mattress review, we unpack the real-world performance of the flagship OTTY Original Hybrid. We test its firmness, heat control, and motion isolation to answer your most pressing sleep questions. Furthermore, we compare it to top-tier rivals to determine if it truly delivers optimal comfort for your sleeping style.
In this article
OTTY Sleep launched in 2016, founded by entrepreneur Michal Szlas. Frustrated with memory foam that slept hot and springs that lacked comfort, he set out to create a better hybrid – at a fair price. The result? The OTTY Original Hybrid, a bed-in-a-box that expands to full size within a day.
Since then, OTTY has become one of the UK’s most successful mattress brands. The Guardian named the Original Hybrid their favourite mattress overall, calling it “the best hybrid mattress you can buy – and also one of the cheapest”.
In 2025, it was the most-purchased product The Guardian recommended. OTTY now offers a full range (Pure, Aura, Firm), but the Original remains their flagship – and the one most people are talking about.
Let’s get straight to the numbers. Here’s what you’re getting with the OTTY Original Hybrid:
| Specification | Detail |
|---|---|
| Type | Hybrid (pocket springs + memory foam) |
| Depth | 25cm |
| Firmness | 7/10 (medium-firm) |
| Layers | 5 to 6 layers (depending on source) |
| Pocket Springs | Up to 2,000 encapsulated springs |
| Trial Period | 100 nights |
| Warranty | 10 years |
| Price (double) | From £650–£675 |
How does it feel? The OTTY Original Hybrid sits at a firmness rating of 7 out of 10, which makes it the firmest mattress in OTTY’s range. It’s advertised as medium-firm, but most reviewers agree it skews towards the firmer end of that definition.
Tom’s Guide tested it and found the medium-firm surface comfortable in all sleeping positions, with good cushioning and excellent support under the hips and spine. The Independent rated it around 7.5 or even 8 out of 10, describing it as “dense and relatively rigid”.
If you prefer a softer bed, this might feel too firm for you. But if you like a supportive, sturdy sleep surface that keeps your spine aligned, the OTTY Original Hybrid delivers.
The OTTY Original Hybrid is built with multiple layers working together to provide support, comfort, and temperature regulation. Here's the breakdown from top to bottom:
Pros
Cons
| Size | Dimensions (W x L x Depth) | Price |
|---|---|---|
| Single | 90 x 190 x 25 cm | £499.99 |
| EU Single | 90 x 200 x 25 cm | £524.99 |
| Small Double | 120 x 190 x 25 cm | £599.99 |
| Double | 135 x 190 x 25 cm | £624.99 |
| EU Double | 140 x 200 x 25 cm | £649.99 |
| King | 150 x 200 x 25 cm | £699.99 |
| EU King | 160 x 200 x 25 cm | £724.99 |
| Superking | 180 x 200 x 25 cm | £799.99 |
| Emperor | 200 x 200 x 25 cm | £849.99 |
OTTY and Newentor Halcyon are two popular box‑delivered options, yet they differ in support design, sleep‑trial length and cooling performance. This quick comparison helps you pick the right one for your sleep style.
| Feature | OTTY Hybrid | Newentor Halcyon Series Hybrid |
|---|---|---|
| Firmness | Medium‑firm | Medium‑firm, supportive tilt |
| Core Build | Bamboo‑charcoal foam + pocket springs | 7‑zone adaptive pocket springs + memory foam foam |
| Thickness | 28 cm | 30 cm |
| Edge Support | Strong reinforced perimeter | Good solid edge performance |
| Cooling | Bamboo‑charcoal moisture‑wicking | Gel‑infused foam + open‑spring airflow |
| Sleep Trial | 100 nights | 200 nights |
| Warranty | 10‑year | 10‑year |
| Best For | Back/stomach sleepers | Back‑pain sufferers, side sleepers, hot sleepers. |
Both the OTTY Original Hybrid and the Newentor Halcyon Series Hybrid are strong bed-in-a-box options in the UK market, but they target different sleep preferences.
Once unboxed, the mattress expands within 4 hours and is technically usable right away. However, it is recommended to give it 24 to 48 hours to fully decompress, air out, and reach its true comfort level.
Yes. The cover on models like the OTTY Original and Aura can be unzipped and machine-washed on a gentle cycle at 40°C. It should be hung to dry rather than tumble dried.
You do not flip the mattress because of its distinct layer structure. However, you should rotate it 180 degrees once a month for the first year, and once every three months thereafter, to ensure even wear.
OTTY mattresses work on most flat surfaces, including solid divans, ottoman beds, and slatted frame bases (provided the slat gaps are no wider than 7.5 cm to ensure proper support).
OTTY mattresses work on most flat surfaces, including solid divans, ottoman beds, and slatted frame bases (provided the slat gaps are no wider than 7.5 cm to ensure proper support).
The OTTY Original Hybrid offers a dependably firm feel for back sleepers, but the Newentor Halcyon Series Hybrid is the ultimate winner for overall sleep quality. With its advanced 7-zone ergonomic coil system, it provides targeted pressure relief where you need it most while keeping your spine perfectly aligned.
Add in superior temperature regulation, custom comfort layers, and an extended risk-free trial, and Newentor clearly leads the way in luxury, adaptability, and long-term value. Upgrade to Newentor for true, pain-free restorative sleep.
