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Heatwave-proof Simba Summer Hybrid Duvet is ‘a revelation’ for hot sleepers
May 24, 2025
As the sleep and wellness editor for the
Good Housekeeping Institute
, I spend a lot of time lying down, testing out the latest sleep-enhancing innovations, from AI-powered mattress toppers to vibrating eye masks and breathwork devices.
But sometimes you have to go back to basics, which is where the best duvets come in. And one product that has genuinely transformed my sleep – I recommend it to anyone who will listen– is the Simba Summer Hybrid Duvet.
You don't just have to take my word for it either – our experts have tested 74 duvets in the lab to date and this Simba design is our winner, scoring a near flawless 98/100.
What sets it apart, you ask? Before you *add to basket*, read on for everything you need to know.
The Simba Summer Hybrid Duvet at a glance
Simba Summer Hybrid™ 4.5 Tog Duvet
Key specifications
FabricPolyester filling, cotton cover with Stratos finish ono one side
Sizes availableSingle, double, king, super king
CareWash at 40C, tumble dry on low, don't dry clean
According to the brand, the 4.5 tog duvet is “designed for soothing comfort, even on balmy nights”. It features Stratos ‘cool-touch’ technology, Simba Renew Bio™ fibres for down-like comfort without overheating, and a cotton cover for ultimate breathability. It’s also stitched into squares to prevent clumping, and is machine washable at 40C.
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