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Staying Cool During A Heat Wave – It’s All In The Bedding!

It’s All In The Bedding!

If there’s one thing England is known for, it’s our eclectic weather. Wet, miserable, and rainy for months, and then as soon as the sun comes out we experience heat waves that leave us uncomfortable, sticky, and with a bad case of sunburn.

Over the last century, the UK has experienced soaring temperatures during the summer, starting with the hottest day in 1923 being 34.4°C. 

  • Compare that to 2018, when we experienced the warmest summer since 2006, the driest since 2003 and the sunniest since 1995 – it’s no wonder so many of us were uncomfortable!

With summer around the corner and warm weather on the horizon, it’s important to look at what you can do to keep well rested at home to have the energy you need for your UK summer adventures. 

As we all know however, hot summer weather in the UK can oftentimes leave you sweating profusely when you’re at home, and leave your bedroom at a temperature that feels like a Sauna (and certainly not a place for you to easily fall into a deep restful sleep).

Luckily, a little preparation can go a long way.

Why Is Colder Better For Sleep?

Have you ever wondered why the cool side of the pillow feels so refreshing? Or why it feels absolutely impossible to sleep during a heat wave? Well, in part it’s because our temperature can have a very real impact on how well we sleep. As well as our internal body clock (known as our circadian rhythm) telling us when to sleep and wake, your core body temperature sends similar signals.

A healthy person’s core body temperature will fluctuate during the day, going up or down depending on a lot of things. It does the same thing at night, but the baseline temperature is between 1-2 degrees lower than it is during the day.

  • As bedtime draws closer, your body temperature will start to drop, signalling to the rest of your body that it’s time to get ready for sleep.
  • It’s why some people feel much colder in the evenings!
  • During the night your body temperature keeps dropping, which is what helps you stay asleep.
  • As the morning comes, your core temperature will rise again, and this will start waking up the rest of your body.

So in short, you will get better sleep, and stay asleep longer, in a room that’s slightly cold! To get the best night’s sleep possible, aim to keep the temperature between 15.5 and 19.5 °C, use sheets made of breathable fibres (since they don’t trap hot air as much) and avoid natural duvet fillings.

That last one might seem odd, but your body temperature is decided by your sympathetic nervous system, which is affected by the way you breathe. So if you’re using a natural duvet filling with an allergen inside (duck feathers are the biggest culprit), your breathing will get laboured, and your body temperature will go up.

If you feel too warm when you’re trying to sleep you can also try some breathing exercises, such as the ’7-11 breathing’ technique, which helps oxygen flow through the sympathetic nervous system and help control not only your stress levels but the temperature of your body as well.

But how can you stay cool in the middle of a heatwave?

Knowing the benefits of sleeping in a cool environment is all well and good, but when it’s the middle of a heat wave, sleeping in a cold room might not be an option for you!

Since air conditioning isn’t common in the UK, the best most of us can do is open the windows and have lots of fans running. Or is it?

Introducing, cooling pillows and duvets

The perfect way to generate your own cool during heat waves. Made from Outlast thermos-technology, this bedding was developed for use in outer space, and can now help you achieve the perfect temperature for a good night’s sleep.

S8 Cooling Sensation Thin Duvet

How it works?

Our duvets and pillows that use Outlast Technology work by using microencapsulated natural wax to capture and store body heat, forming a natural heat buffer that stops up to 48% of sweat production and wicks away moisture.

This coating is applied to all of our cooling duvets and pillows, leaving you feeling cool and dry on even the hottest, stickiest days. It’s like finding a little oasis of cold in the middle of the Sahara. 

What options are there?

S8 Beyosa Dual-Zoned Duvet

Our dual zoned duvet is the ultimate duvet to help you throughout the year.

Key features:

  • Year-round useability.
  • One side cools you down.
  • The other side warms you up.
  • Uses NASA Outlast technology.

Buy the S8 Beyosa Dual-Zoned Duvet Here

S8 Cooling Sensation Thin Duvet

⭐️ Rated “Best Value Summer Duvet” by GoodHouseKeeping

Our cooling sensation thin duvet provides a remarkable cooling sensation all night long.

Key features:

  • All season quilt duvet with modern bamboo fibre filling.
  • Uses NASA Outlast technology.
  • Fabric uses carbon threads and body line cross-stitching to follow the shape of the body.

Buy the S8 Cooling Sensation Thin Duvet Here

S8 Smart Pillow 3.0 Axis

Explore our S8 Smart Pillow, using a precision sensor to monitor and analyse your sleep patterns to get the most restful sleep.

Key features:

  • Use of NASA Outlast technology on one side of the pillow to absorb heat.
  • Use of Envi-Max technology on the other side of the pillow to regulate moisture.
  • Eco-friendly foam.
  • Cooling gel to promote air flow.
  • Precision sensor to monitor sleep.

Buy the S8 Smart Pillow Axis 3.0 Here 

S8 Alpha Pillow

Ergonomic memory foam pillow with cooling gel to give you the sensation of a freshly flipped pillow throughout the entire night.

Key features:

  • Moulds to the curve of neck and face.
  • Gel particles provide cooling effect all night long.
  • Ergonomic memory foam.

Buy the S8 Alpha Pillow Here

S8 Hybrid Pillow

Our S8 Hybrid Pillow is perfect for maintaining its shape whilst keeping you feeling cool and cosy.

Key features:

  • Shoulder curve to provide space for your shoulder whilst you sleep.
  • Filled with elastic and voluminous hypoallergenic fibres
  • Ensures adequate breathability and temperature regulation
  • Outer cover made of 100% cotton with 3d mesh

Buy the S8 Hybrid Pillow Here

 S8 Indigo Pillow

A classic memory foam pillow with cooling gel particles to give you a deep and refreshing sleep.

Key features:

  • Neck inserts for custom comfort and support.
  • Gel particles give a cooling effect throughout the night.
  • Memory foam moulds the shape of the neck and face.

Buy the S8 Indigo Pillow Here

Is A Cooling Duvet Right For You?

If you’re a bit hesitant about the idea of a cooling duvet vs a standard style, we don’t blame you. It can be difficult to break the tradition of decades, and bedding hasn’t changed much in all that time. 

To help you make an informed decision, let’s take a look at some of the reasons our customers love our cooling duvets and the advantages that they have over regular duvets. 


  • They are incredibly versatile, so they can be used throughout the year, not just in heat waves.
  • They promote better quality sleep by lowering your body temperature and removing moisture.
  • Heat doesn’t get trapped under the duvet, so you can breathe easier during hot weather.
  • Cooling duvets are designed to be moisture-wicking, so if you sweat during the night you won’t wake up feeling damp and clammy.

Why Sleep8?

At Sleep8 we understand the value of a good night’s sleep, which is why we’ve invested heavily into developing a range of products that combat common sleep issues and provide you with the perfect level of comfort while you snooze. 

The innovative Outlast fabric developed by NASA maintains a comfortable temperature balance, while hypoallergenic fillings and sleep sensors ensure optimum comfort through the night.

Our range of cooling pillows and duvets are designed to keep your body temperature perfectly balanced during even the hottest summers, so you can be refreshed for summer fun every single day. 

Our signature Cooling Sensation Thin Duvet is ideal for the upcoming heat wave, and paired with one of our cooling pillows (tailored for personalised comfort, cooling ability and flexibility, we guarantee you’ll never experience a better night’s sleep.

We even have a dual-zoned duvet, for those couples who always seem to be at different temperatures! One side cools you down while the other warms you up, so both of you can be comfortable and sleep soundly.

If you’d like to know more about our range of cooling duvets and pillows, just get in touch with us today and we’ll happily answer every question you have.