Panda Bamboo mattress topper review: soothed my pain and improved my sleep – even in a heatwave | Sleep

When I was struggling to sleep in a heatwave, diving into a 6ft slab of memory foam didn’t exactly sound like the answer. Memory foam is renowned for trapping heat, and the more “sinky” the foam, the more heat you’d expect it to trap. Less comfort layer, more boiled marshmallow.

However, the foam used by Panda in its flagship mattress topper genuinely seems to break the mould. It has the cosy feel of conventional memory foam, but it eased my night sweats so well when I tested the best mattress toppers in summer 2025 that I named it the “best cooling topper”, beating rivals filled with airy wool and microfibre.

That test didn’t take place during a record-breaking heatwave, though. Could this topper still keep my temperature under control when the thermometer was reading 32C in my bedroom at 1am? It’s a tall order, but I’m never one to pass up the chance of snoozing in the name of Filter research.

In this in-depth review, I have good news and bad news. The bad news is that Panda’s topper – which at £139.95 for a double is less than half the price of the premium Simba Hybrid topper (£349 RRP for a double) and significantly cheaper than a whole new mattress – won’t actively cool you down. The good news is it helped me achieve some of the best sleep I had all summer, and below I’ll explain why.

How I tested

I test mattress toppers in much the same way that I test mattresses, namely by sleeping on them. I first reviewed a double-size Panda bamboo topper in summer 2025 and then donated it to charity, so Panda kindly sent me a new model for this 2026 test.

I left the topper in the spare room for two days to expand to its full size, then attached it to the medium-firm pocket-sprung Premier Inn Mattress 2.0 and slept on it for a week in early July, when our bedroom temperature rarely dropped below 30C at night. Not pleasant, but a good opportunity to put Panda’s claim of a “cooler, comfier sleep” to the test.

I was joined for the sleep test by my husband, Alan. We tend to toss and turn at night, so if a mattress or topper can absorb these movements (what’s known as “motion isolation”) and help us sleep in peace, it usually scores extra points with me. Alan also helped me with the more nerdy tests that involved weights, string and a ruler (to measure sinkage), plus an infrared thermometer and Alan’s bottom (to measure heat retention).

A mattress topper should be easy to carry and store, especially if you’re unlikely to leave it on your bed indefinitely. Well-made details, such as zips and stitching, are signs of quality, as is a generous stuffing that fills the casing consistently from corner to corner. Other factors such as aesthetics and firmness are more subjective but still important.

Price is a key consideration – but I don’t just give kudos for cheapness. Value for money is about getting what you pay for, and not paying over the odds for a brand name or novel features that ultimately add little.

What you need to know

London-based bedding company Panda eschews cotton and down in favour of bamboo fibre (hence Panda) in its duvets, bedding, mattresses and toppers – including this one.

The topper’s zippable cover is 70% bamboo viscose and 30% polyester, and can be removed for machine washing at 30C. On its underside are thousands of tiny rubberised dots that help stop it sliding around as you get in and out of bed, while each corner features a strong elasticated strap. Surprisingly, Panda’s is the only topper I’ve tested so far with adjustable straps, so you can fit it securely on mattresses of any depth.

Inside the cover is a single 5cm layer of high-viscosity polyurethane foam, AKA memory foam. Panda calls the foam in this topper HydroFoam and describes it as “third-generation memory foam”. It’s infused with gel beads designed to regulate temperature, and its open-cell structure aims to counteract memory foam’s tendency to retain heat.

Panda describes its topper as “medium-firm and supportive”, with a foam density of 80kg/m³, although it feels far less dense than that. Memory foam tops out at 75kg/m³ according to this density chart; 80kg is more like the solid “chip foam” used for gym mats. Panda’s memory foam is certainly supportive, but it’s much more cradling and cosy than a gym mat.

The Panda bamboo topper costs from £99.95 for a single to £199.95 for an EU emperor, with a UK double coming in at £139.95. That’s mid-range for mattress toppers, which can be as cheap as the Silentnight Airmax 1000 (£38 for a double in the sale at the time of writing), or as pricey as the Tempur One (£549), which is close in feel to the Panda. The Panda’s 10-year warranty is at the top end, and you also get 30 nights to sleep on it before deciding whether to keep it.

Specifications

Material: memory foam filling; bamboo and polyester fabric cover
Firmness: advertised as medium-firm, rated by Alan and me as 6.5/10
Depth: 5cm
Care: unzip cover to wash at 30C; wipe-clean foam
Free trial: 30 nights
Warranty: 10 years
Sustainability credentials: made from renewable bamboo, sourced from managed forests; Oeko-Tex Standard 100 certified to be free of harmful substances; Panda collects and recycles old mattresses for free under “Circle of Life” initiative

What we love

At first, I thought I’d been sent a pillow by mistake. My double topper arrived vacuum-packed in a tiny box (about 1 x 2ft), and even once expanded to full size it was light enough (7.15kg) to move around and store easily. After wrestling with countless bulky mattresses, it was a joy to be able to unpack it from the shrink-wrap all by myself – without any swearing.

Its quality was visible from the off. The memory foam pad fills the fabric cover corner to corner; the zip works smoothly all the way around; the fabric is soft but robust; and the stitching is beautifully finished. These may seem like trivial details, but they show that this product isn’t “fast furnishing”, but something built to last – an impression backed up by its excellent 10-year warranty.

Alan and I used the topper’s adjustable straps to attach it securely to the chunky 28.5cm-deep Premier Inn mattress, and slept on it for a week during the soggy, sweltering nights of July. Given the heat, I was surprised by how well I slept. I felt well supported, without too much pressure on my joints or ribs, and the topper’s motion isolation was exceptional. When Alan turned in bed next to me, I could hear his head turning on the pillow, but there was none of the bounce or ripple you experience when sleeping on a sprung mattress.

The topper adapted beautifully to my side-sleeping body, allowing my hips, shoulders and other pressure points to sink and enabling my back to fully relax. I’ve slept on enough saggy hotel beds to know how uncomfortable an overly soft mattress can be, but the topper’s foam was highly supportive where needed, lifting me up while cradling my pressure points. I slept well and woke up feeling refreshed and pain-free.

In the past I’ve found that an old rib injury can start to niggle on firm surfaces, but there was none of that here. I felt suspended, almost as if I were floating in a dense cloud. If you live with musculoskeletal pain and struggle to get comfy on your existing mattress, this topper could help you sleep more comfortably.

Will it help me sleep in the heatwave?

I named the Panda the “best cooling topper” in my mattress toppers roundup after testing it in 2025’s relatively mild conditions. Could it still perform when my bedroom was stubbornly hovering above 30C the following year?

No “cooling” mattress or topper can actively cool you down; it’s not like putting your sheets in the freezer. However, what a good cooling topper or mattress can do is stop you from overheating, and in that regard the Panda performs amazingly well. While conventional memory foam tends to trap body heat, Panda’s bamboo fabric and open-cell foam seemed to help keep my temperature under control, even wicking away sweat from my body.

To back this up with evidence, I used an infrared thermometer to take the topper’s temperature before and after asking Alan to sit on it for two minutes. Pre-bottom, the bamboo fabric surface was 31.9C, roughly the same as ambient room temperature. Immediately post-bottom, the surface was 34.9C. Thirty seconds later it was 32.5C, and after 90 seconds it had dropped back down to 31.9C. That suggests the foam is able to dissipate body heat rather than collect it.

I repeated the test on the “temperature regulating” Premier Inn Mattress 2.0 after removing the topper from it, and got similar results. I’d suspected that the Panda would do better on temperature control than conventional memory foam, but I was amazed to find it matching a pocket-sprung mattress.

Before celebrating, I had to make sure I didn’t get an identical result from any old surface, so I ran the same test using the “winter” side of the Sleepeezee Dual Seasons mattress, which I also have in for review. Sure enough, that mattress retained heat for much longer (as it’s designed to), failing to drop back to room temperature until eight minutes after Alan and his bum had wandered off.

What we don’t love

The sink-in sensation of memory foam takes some getting used to. When I first began testing mattresses six years ago, I struggled to get comfortable on foam because I was used to much firmer surfaces that made it easier to turn in bed. Also, foam allows less air to circulate around your body than firmer surfaces do, or mattresses whose upper comfort layers are filled with natural fibres, such as wool.

In my sinkage tests, the middle of the topper’s surface sank 33mm under 7.5kg of weights. That’s similar to a couple of hybrid mattresses I’ve tested, including the Eve Wunderflip Hybrid. As such, some will find it too soft, although I found that the Panda topper’s high viscoelasticity (which essentially means that it’s dense but mouldable) made it feel more supportive than that mattress.

This mattress topper needs a couple of days to expand to full size before you try sleeping on it – or, indeed, reviewing it. What’s more, it won’t transform a saggy mattress. As with all the toppers I’ve tested, the mattress you attach it to needs to be at least medium-firm, or the topper will just exaggerate its softness and mould to any dips in its surface.

Sustainability

The mattress industry isn’t exactly an environmental hero, and memory foam is particularly problematic. Polyurethane foam has an intensive manufacturing process (it’s the UPF of bedding materials) and can only be recycled at specialised facilities. So far, so unsustainable – but Panda is making more positive efforts than many of the sleep brands I’ve reviewed.

Bamboo, which Panda uses, is a renewable resource that releases about 35% more oxygen than trees. All Panda’s bamboo is sourced from managed forests, and its bamboo textiles (viscose and lyocell) are Oeko-Tex Standard 100 certified free of harmful substances.

The fabric in this topper is bamboo viscose, which is processed using chemicals and is less green than lyocell. According to Panda’s environmental impact report, though, all its textiles are produced using a closed-loop process that limits water waste. Its products are also vegan-friendly and packaged in biodegradable cardboard.

Panda is the only sleep company I’ve reviewed that doesn’t charge to recycle your old mattress when you buy a new one from them. It will also collect your old Panda mattress for free “when the time comes to part” with it. It says it’s now extended this scheme to mattress toppers and pillows, too, but there was no offer to collect my old bedding when I tried to check out with a Panda topper on its website.

Panda Bamboo mattress topper: should I buy it?

Panda’s topper is the most comfortable memory foam surface I’ve ever slept on. The breathable design does a good job of offsetting foam’s natural heat retention, and its supportive but sumptuous feel could make a real difference for anyone experiencing pain or struggling to get comfy on a mattress that’s too firm.

Memory foam can take a little getting used to, and this topper won’t suit everyone. I’m also keen not to overstate its “cooling” powers – it can help avoid nighttime clamminess, but it won’t actively reduce your temperature in a heatwave. It won’t make a saggy old mattress comfortable again, either. If you buy any topper hoping to do that, you’ll have wasted your money.

For adding luxurious softness and pressure relief, though, Panda’s bamboo topper is hard to beat, especially for the price. At £139.95 for a double, it’s excellent value, and its 10-year warranty and 30-night free trial make it even easier to recommend.

Panda Bamboo mattress topper vs …

Simba Hybrid topper