Silentnight Winter Nights Heated Underblanket - Kingsize450/0434

  • £29.99

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About this product

This item is eligible for same day delivery and faster in‑store collection

A warm and toasty bed waiting for you after a long, hard day is a must on those colder nights. With just a short 15 minute heat-up time, the Silentnight Essentials heated underblanket won't keep you waiting long! Made from 100% soft microfleece with overheat protection, this kingsize electric blanket is extra cosy and has two safety systems for your peace of mind.


  • Made from microfleece.
  • Secured by ties.
  • Single detachable control.
  • 3 heat settings.
  • 15 minutes heat-up time to reach 37°C.
  • Suitable for all night use.
  • Low energy consumption.

Safety features:

  • Overheat protection.
  • BEAB approved - safety verified by an independent third party.

General information:

  • Size W144, L152cm - suitable for kingsize bed.
  • Machine washable and suitable for tumble drying.
  • 3 year manufacturer's guarantee.
  • EAN: 5012701298834.

818 reviews

Overall rating (4.5)

BazaarVoice TrustMark
4 / 5

good stuff

good product for the price .....a few negatives , I found the control unit that plugs into the blanket/power cord is very chunky and if you sleep near the edge of the bed this can be a problem , also the warm up time claims to be 15 minutes to get to 37 degrees ......allow more time as I find it takes longer ...

5 / 5

Fab blanket

Excellent quality soooo warm great price

5 / 5

Great under blanket

Great under blanket, with different heat settings. Blanket heats up quickly. It was a great price and fits the kingsize bed perfectly. This blanket only has one control but perfect for my needs

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Questions & answers

23 questions | 27 answersAsk a question
Heat only half of king size blanket option or do I need to buy 2 singles?

Can you choose to heat only 1 side if choosing a king size

1 Answer

Hi, AndRea.

I'm sorry, but the whole of the Silentnight Essentials Heated Underblanket gets heated up when switched on; it's not possible to heat only half the blanket. I hope this is useful.

Have a good day!


Can you have one side on and the other side off? I want heat, and my husband doesn't

1 Answer

Unfortunatley, It's all the Blanket heat with a number of heat levels, you are unable to heat only a half section of the item.
I would suggest you buy the Single size Blanket for your side of the bed only (Let him freeze).


What is the difference between a mattress topper and an under blanket .

2 Answers

Mattress toppers will take the same shape as the mattress if it is already dipping.
They also tend to slip and ruck up !!! Far better to buy a new mattress with a built in memory foam top inside !!!
You can still use a heated electric blanket on top of the mattress........between the mattress and a mattress protector.......and then the fitted sheet!!!


Hi, thank you for your question.

Having looked into this for you I can confirm that the difference between the electric underblanket and the electric mattress topper is, that the mattress topper is twice as thick as an underblanket providing you with more comfort as well as the additional heat when you get into bed. They are both placed on the bed in exactly the same way.

Thank you for using Argos Q&A.

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Boring but important info

Putting your safety first

You can be sure that when you buy an electric blanket from Argos, you are purchasing a quality product that has been thoroughly tested and conforms to all European and UK safety standards.

*Prices correct as displayed but are subject to change.

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