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Tom's Guide
18-06-2025
- Health
- Tom's Guide
I test bedding for a living — this is the one simple switch I recommend for cooler sleep this summer
Summer is not all beach days, lemonade and lovely walks. Hot sleepers will know that this is also the season for night sweats, overheating and stuffiness. But what if I told you that all you need to do is one simple bedding swap to sleep cooler throughout hot summer nights? While you might change your bedsheets from luscious sateen to breathable cotton to make warmer nights more bearable, what you actually need to switch is your duvet. Thanks to the latest tech in bedding, you can now find a duvet counterpart to the best cooling mattresses, designed for those prone to overheating during sleep. I recently tried a cooling duvet myself and was frankly impressed by how it made my sleep better, so it's a solid recommendation from me. But first, let's understand what makes it different from a regular one… A cooling duvet is one made from breathable materials ranging from cotton or natural down to hemp fibers, designed to dissipate excess heat during sleep. These may also incorporate specialized cooling technology like phase change materials (PCMs) and cooling-gel infused fibers, which can regulate temperature and help you get a restorative night's sleep, even during the warmest weather. However, a huge factor when choosing the best duvet for your sleep is the tog rating. Short for Thermal Overall Grade, the tog is simply a measure of how much heat your duvet retains. Higher the tog rating, the warmer your duvet. While the standard duvet tog rating is 10.5, for summer you might need something even lighter — between 4.5 and 7.5. Sticking to a duvet with a higher tog than 10.5 in the summer is a common mistake to make, and it could be sabotaging your sleep this summer. To see the benefits myself, I've been using the Simba Hybrid Duvet for the past few days. For context, I'd previously been sleeping with a cheaper department store microfiber duvet that made me overheat on particularly warm nights when the temperature was reaching 20°C (68°F). The highlight of the Simba duvet is the signature Bio Renew fiber fill, which basically mimics the plush and airy comfort of natural down. On top of the duvet, you'll find Simba's version of a phase change material: the Stratos Cool Touch Tech. According to the brand, "this is similar to the tech which keeps astronauts cool in space" and works to give you instant coolness. The bottom layer, on the other hand, is a plain cotton side which is soft, breathable and comfy to touch. No one likes a duvet that gets clumped up, and the square stitched construction in the Simba hybrid duvet ensures that it never does, by preventing uneven distribution of the fill during sleep. Being a fan of bedding products that can be used all year round, I've found this Simba duvet to be a perfect fit, thanks to its lighter construction and 10.5 tog rating. Simba Hybrid Duvet: UK Single £139 at SimbaThe Simba Hybrid Duvet is available in four different sizes (UK Single to Super King) starting from £139. This also includes a 30-night return policy, 1-year warranty and free fast shipping. Buffy Breeze Comforter: was $190 now from $152 at BuffyThis is a great US alternative to the Simba Hybrid duvet I tried, made from breathable and light Lyocell fibers and a soft cotton cover. As the name suggests, it is designed to deliver maximum breathability, perfect for warmer locales and hot sleepers. You can now grab these up to 30% off which brings the price of a twin down from $190 to $152, while a queen is priced at $200 (was $250). You'll also get 50-night free returns, 3-year warranty and free shipping. While I didn't find it to be frosty to the touch or as cooling as an aircon (which is a bit much to expect from a duvet), the Simba Hybrid Duvet maintained a neutral temperature perfect for summer sleep. Here are the details on how it changed my sleep: Sleeping with the Simba Hybrid allowed me to get the recommended hours of rest. This means, no kicking away the sheets or constant shift in positions due to overheating or stuffiness. It helped me sleep through the night and wake up feeling well rested. An important point to note here is that no one actually sleeps through the night and that waking up or stirring at the end of a sleep cycle is a normal occurrence. However, what you should be paying attention to is how long you're awake for in the night, and how rested or tired you feel in the morning. If you're anything like me, you will understand that sleeping without a duvet, no matter how hot it can get, is simply not an option. The feeling of security and comfort is not something I want to give up, but what awaits on the other side is overheating and nighttime sweating. This is where a cooling duvet becomes the ultimate hero. Being a combination sleeper who usually ends up in a foetal position lying on my side, the Simba Hybrid served as the perfect partner for my ideal 'sleep cocoon'. Being a bedding tester, I prefer fuss-free products that are suitable for use throughout the year by all types of sleepers. Why? Firstly, stocking up on separate bedding for each season is not cost-effective in the long run. Secondly, you might not have enough storage space, especially if you're in a smaller apartment. The Simba Hybrid duvet checks all the boxes in this case, since it's perfect for summer being lightweight, while you can layer it up with other sleep accessories like the best weighted blankets for a cozy winter night too.
Metro
27-05-2025
- Lifestyle
- Metro
This eco-friendly duvet is the secret to sleeping cool all summer long
Metro journalists select and curate the products that feature on our site. If you make a purchase via links on this page we will earn commission – learn more Not to be dramatic, but I've recently had the best sleep of my life – with thanks to the Simba Hybrid Duvet. I've had my current duvet for quite some time, and am relatively attached to it, but when it came to keeping warm or cooling down – it never quite performed as well as I'd want. After all, British summers are a bit like our public transport: unpredictable, occasionally unbearable, and guaranteed to leave you sweaty and confused. Thankfully, the Simba Summer Hybrid® Duvet, your new best friend for those sticky, sleepless nights – especially with another heat wave on the way. The Simba Hybrid Duvet combines a soft, down-like feel with breathable Simba Renew Bio™ fibres for lightweight warmth and year-round comfort. Its Stratos® Cool-Touch Technology and breathable cotton cover help regulate temperature, making it ideal for hot sleepers. The square-stitched design prevents clumping, and it's machine washable for easy care. Plus, it comes with a free, reusable storage bag for added convenience. Buy Now from £139 Now, I know what you're thinking – 'It's just a duvet', but oh no, this isn't just any duvet. This is a 10.5 Tog, Stratos® Cool-Touch Technology-infused, eco-conscious marvel that practically whispers 'sweet dreams' as I drift off. Crafted with a breathable Better Cotton Initiative (BCI) approved cotton cover and filled with Simba Renew Bio™ fibres (made from recycled PET bottles, and engineered to biodegrade in just two years), this duvet is as kind to the planet as it is to your sleep schedule. What I love most is it's lightweight, machine washable, quick-drying, and stitched in neat squares to prevent that dreaded clumping – no one wants to wake up in the middle of the night tangled in a lumpy duvet that's migrated to one… As for the feel? Imagine sleeping under a cloud that's been engineered by NASA and fluffed by angels. I'm not kidding you, it's really that good. Whether you're a hot sleeper, a duvet-kicker, or someone who just wants to feel like they've got their life together (even if it's just in bed), this one's for you. And I'm not the only one who thinks so – over 16,000 people have rated and raved about the Simba Hybrid™ Duvet, and an average rating of 4.8/5 stars too. Doreen B recently said: 'The Simba duvet screams luxury. It makes my bed look so luxurious. It keeps me comfortable and cool in the warm weather and cosy in the cold. Very good quality and easy to flick when making the bed.' Lynne M also mentioned: 'Usually have a 15 tog and this is equivalent to a 10. 5 tog and we have felt the correct temperature every night. It feels rich and well made. Love it.' 'No regrets,' added Samantha M, who followed with: 'Such a dream! It envelopes me like a weighted blanket and the temperature control is perfect! Warm and cosy!' More Trending Another five star reviewer, Natasha T also typed: 'I couldn't be happier with this duvet! It's incredibly soft, perfectly weighted, and keeps me at just the right temperature all night—warm and cozy without ever feeling too hot. The quality is exceptional, with a luxurious feel that rivals high-end hotel bedding. It fluffs up beautifully and fits perfectly in the cover without shifting around. I've never slept better. If you're looking to upgrade your sleep experience, this duvet is an absolute must-have. So, if you're ready to stop tossing, turning, and sticking one leg out in a desperate bid for cool air, the Simba Hybrid Duvet might just be the best investment you make this summer. One ticket to snooze-ville, please. Follow Metro across our social channels, on Facebook, Twitter and Instagram Share your views in the comments below MORE: These are the stylish scalloped furniture and decor picks from Dunelm we're loving this spring MORE: Sleep better for less with Simba's May sale offers and big savings on premium sleep tech MORE: Top 6 items any first-time buyer should have on their shopping list as chosen by our shopping expert
