The OTTY Pure+ Hybrid 4000 Pocket Sprung Mattress is, by OTTY's own description, the softest mattress in its range, with more springs and memory foam than anything else it makes. With a medium tension (around 5.5 out of 10 on the firmness scale), it strikes a great balance between plush cushioning and supportive stability. The mattress combines 4,000 individually wrapped pocket springs with advanced memory foam, and the result is a luxurious sleep surface that feels both cosy and supportive. It stands 28cm deep, which is plenty of mattress and still under the 30cm where fitted sheets start to struggle. On paper, the OTTY Pure+ is a perfect all-rounder that can cater to a wide range of sleepers.
- Medium firmness (5.5/10): Excellent balance of support and softness suitable for most people.
- Dual-layer 4000 pocket springs: Two layers of springs adapt to your body for targeted support and minimal motion transfer.
- Bamboo & charcoal memory foam: Infused foam layers provide pressure relief and aid cooling & freshness.
- Edge-to-edge support: Reinforced sides prevent roll-off, allowing full use of the mattress.
Comfort and Support
OTTY lists 5cm of memory foam on top of the springs. That is enough to take the pressure off a shoulder or a hip, and with springs this close underneath I wouldn't expect the “quicksand” sink that deeper foam beds have. The result should be a medium firmness feel, soft enough to cushion pressure points yet firm enough to keep your spine aligned. Bear in mind the rating is OTTY's own scale, so read it as soft for an OTTY. One owner who had found OTTY's Original too hard wrote: “The deep memory foam is a different sort of feel but lovely for my back and achy joints.”
Those 4,000 individually wrapped springs really shine in how they adapt to you. Split into two layers of up to 2,000, one 8cm deep and one of 4cm springs, they should spread your weight evenly whether you lie on your back or your side. The dual spring system (a taller layer plus a micro-spring layer) provides deep support and fine-tuned contouring at the same time. That is sturdy support under a plush top, which is the combination I like in a hybrid.
Pressure Relief for Side Sleepers
Pressure relief is a major strong suit for the Pure+. A side sleeper needs the shoulder and hip to sink in a little while the waist stays held up, and a memory foam top over a medium spring unit is built for that. One side sleeper who had found their first hybrid a bit too firm wrote that the Pure+ “gives me the comfort I need”. It will not suit everybody. One owner who bought on the 5.5 rating found it “incredibly Firm” and sent it back, so use the trial properly before you decide.
Cooling and Breathability
Heat is the usual worry with memory foam, and OTTY has built the Pure+ around it. It uses bamboo- and charcoal-infused memory foam which are designed to be breathable and moisture-wicking. OTTY also built in an airflow system: small perforations in the foam and breathable side support channels that help heat dissipate. The drilled foam and the vented sides are the parts I'd trust most to help, more than anything the foam is infused with. If you're a hot sleeper or live in a warm climate, this mattress should keep you sleeping comfortably cool.
Edge Support
Edge support should be a strong point on the Pure+. It is the first thing I look for in a hybrid, because a saggy edge turns a double into a small double. Here the side supports surround both spring layers and the lower layer has reinforced borders, so the build is right for sitting on the side of the bed and for sleeping close to it. Couples and anyone buying smaller than a king will get the most from that.
Motion Isolation for Couples
For couples, motion isolation is crucial, and the Pure+ doesn't disappoint. The combination of pocket springs (each working independently) and thick foam layers means movement is well absorbed. Memory foam is the best thing going for killing movement, so I'd expect a partner turning over or getting up in the night to stay on their own side of the bed. The springs underneath keep some bounce in it, which helps if you change position a lot. Light sleepers will appreciate how undisturbed the Pure+ lets you remain, even if your partner tosses and turns.
Suitability for Different Sleepers
The OTTY Pure+ hits that rare balance of being versatile enough for many types of sleepers. OTTY recommends it for side and back sleepers, and I'd say the same from the build. Side sleepers get the pressure relief they need for shoulders and hips, while back sleepers find plenty of support to keep the spine aligned. Front sleepers are the ones I'd steer elsewhere: this is a medium with a soft foam top, and a front sleeper needs something firmer to stop the hips dropping. Unless you have a strong preference for an extra-firm bed, this medium mattress should accommodate most sleeping styles without issue. It's also built to handle a range of body weights. Heavier folks should be well-supported by the robust springs, and lighter individuals will get ample cushioning from the plush top layers.
Final Thoughts
Overall, the OTTY Pure+ Hybrid 4000 looks to me like a truly comfortable and high-quality mattress. It combines the best of both worlds: the pressure-relieving hug of memory foam with the sturdy support of pocket springs. One owner bought a second for the spare room within three months, calling the first “extremely supportive and comfortable”.
Compared to the OTTY Pure Pro, which has up to 3,000 springs and a firmer 7 out of 10 rating, the Pure+ is the softer and more cushioned of the two, and it's the one I'd pick for a side sleeper. It's clear this is OTTY's premium offering and it has a very luxurious feel. With the 100-night trial and a 10-year warranty included, it's a low-risk investment that the company stands behind. If you're considering the Pure+ Hybrid, I think it's a fantastic choice for a broad range of sleepers seeking that perfect blend of comfort and support.
