An underblanket is an electric blanket that sits on top of your mattress and beneath your bottom sheet. It gently warms the bed from below, giving you a cosy, pre-heated sleeping surface to crawl into, ideal for cold nights and chilly toes.
Unlike an overblanket (which goes on top of you like a throw), an underblanket stays in place under your body throughout the night. Most models come with adjustable heat settings, safety features like auto shut-off, and energy-saving designs that cost just pennies to run.
At Dreamland, we’ve been making heated bedding for over 50 years, and the humble underblanket remains one of the simplest ways to stay warm! Best of all, you don't need to switch on the central heating.
Key Takeaways
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An underblanket is a heated layer that sits on top of your mattress and beneath your fitted sheet, gently warming the bed from below.
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It’s an energy-efficient way to stay warm at night, with adjustable heat settings, safety features, and low running costs.
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Underblankets stay securely in place, making them ideal for consistent warmth and comfort during colder months.
What does an Underblanket do?
An underblanket gently heats the bed from underneath. This creates a warm, inviting surface to sleep on. They help take the chill out of the sheets and keep you comfy throughout those colder nights.
Underblankets are especially useful in the winter or in draughty rooms. If you're looking for a way to keep warm in your bedroom without needing to heat the whole house, electric underblankets are perfect.
View our full range of heated underblankets for a cosy boost.
What are Underblankets Best for?
Heated underblankets are designed to make bedtime warmer, cosier, and more energy-efficient. Here’s what they’re perfect for:
Cosy Placement
An underblanket sits neatly on top of your mattress and stays in place all night. Perfect if you don't like readjusting or wrestling with blankets that slip off. Once it’s on, you can forget about it! Just enjoy the warmth beneath you.
Custom Heat Settings
Most modern underblankets come with multiple heat levels, so you can set it just how you like it. Some models even come with dual controls, letting you and your partner choose your own temperatures on each side of the bed. No more disagreeing on whether it’s too hot. Perfect.
Cheap Ways to Keep You Warm
Running an underblanket typically costs just a few pence per night, which is far less than cranking up the heating. It’s a smart choice for anyone looking to cut energy bills without sacrificing comfort.
Safety Features
Our heated underblankets are built with safety in mind. Features like auto shut-off, overheat protection, and fast heat-up times mean you can use them with confidence, night after night.
What is the Difference Between an Electric Blanket and an Underblanket?
An electric blanket is a broad term for any heated bedding. This includes both underblankets (which go underneath you) and overblankets (which go over you, like a throw or duvet).
The key difference? An underblanket is designed to lie flat on the mattress and warm the bed from below. It stays in place all night and is usually used under your fitted sheet. An overblanket, on the other hand, is more flexible. You can drape it over yourself in bed, on the sofa, or while working from home.
How do you use an Underblanket?
Using an underblanket is simple. Just lay it flat on top of your mattress and secure it in place using the straps or elasticated corners, depending on the model. Then make your bed as usual, placing your fitted sheet over the top.
Plug it in, choose your heat setting, and switch it on around 15–30 minutes before you get into bed for a perfectly pre-warmed sleep space. Many underblankets also have timers and auto shut-off functions, so you can leave them on safely while you drift off.
Our Favourite Underblankets
If you’re thinking an underblanket might be a great option to keep cosy, take a look at some of our favourites:
Pure Comfort Bamboo Underblanket
The Pure Comfort Bamboo Underblanket is a comfortable and eco-conscious solution. Made with premium bamboo, this blanket is perfect for sensitive skin, but most importantly, for keeping you cuddly and warm on those chillier nights.
Hunker Down Scandi Sherpa Underblanket
Wanting to hunker down in style this winter? Our Scandi Sherpa blanket is perfect for creating a warm atmosphere and allowing you to sink into some well-deserved duvet time. This blanket is also reversible, meaning you can flip over the Sherpa side in the warmer months.
Eco-Friendly Electric Underblanket
Our Eco-friendly Bamboo Underblanket is a great plant-based solution, with advanced energy-saving technology. With a fast 5-minute heat up and a customisable timer, you can create a lovely warm atmosphere while also prioritising the environment.
Our Full Range of Bedding
At Dreamland, we’ve been prioritising keeping you warm in genuinely soft bedding and blankets for years. All of our products are eco-friendly, and put your well-being first.
Discover our full warming range of heated underblankets here. Alternatively, check out our other cosy heating solutions, including duvets, mattress protectors, and overblankets.