Monster Onesie



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Monster Onesie features in our Nightwear & Slippers collection

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Why we love this

Your little monster will love this super cute onesie as much as us. This fluffy onesie comes complete with a hood featuring teeth and eye detailing for that ultimate scary little monster look!

• Machine washable
• Hood

In the interest of safety this garment has undergone additional testing for flammability. This product should be worn under adult supervision.

Fabric composition: 100% Polyester
Warning: Keep away from fire and flames.

Product Code: 5107015

Available Delivery & Return Options

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    Standard Delivery (3-5 days)


    Named Day Delivery


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  • International delivery
    International delivery not available
  • International delivery
    International delivery available

    Wanting to deliver an order outside of the UK? This will be undertaken by Asda Delivery Ltd unless you have made other arrangements. All our international delivery information can be found here.

  • Delivery
    Have this item delivered

    Standard Delivery (3-5 days)


    Named Day Delivery


    Next Day Delivery



  • Free Returns
    Return in any ASDA store FREE
    Not happy with your George clothing item? Simply return it to store within 100 days with your proof of purchase for a refund or exchange. Subject to our 100 day guarantee terms and conditions. Information on how to return clothing items can be found here.

    Returning an item from outside the UK?

    Returning an item from outside the UK is easy. Simply, download and print a cancellation form. Repack your item along with this form and send back to the address stated on the form.

    We recommend you use a postal service that insures your contents and gives you proof of postage. Postage will be at your own cost.

Our customers say

Rated 4.7 out of 5 by 10 reviewers.
Rated 5 out of 5 by Great value Looks fantastic. Better quality than expected for the price. Size 1-2 fitted my 18mo very well, just slightly long in legs which is to be expected. 05 November 2015
Rated 5 out of 5 by Great Halloween costume Great Halloween costume 02 November 2015
Rated 5 out of 5 by cute! Really cute to see but I would say that it's not the softest next to the skin. Not a problem for us as we used it for Halloween over trousers and a vest but worth knowing if you're actually going to use it as a onesie around the house. Super soft though on the outside! 01 November 2015
Rated 4 out of 5 by Halloween monster costume I bought this as a Halloween costume, but on its arrival I realised that my little boy also wanted to wear it to bed. So instead of just using it for one day he would have multiple use out of it, a bargain. And he did look super cute in it as well. 01 November 2015
Rated 4 out of 5 by Good purchase Material inside is rough. The hood is fantastic. Good buy. 30 October 2015
Rated 5 out of 5 by Lovely and cuddly Bought for my 3yr old grandaughter,I call her my wee monster, so soft ideal for Halloween, but will do through the winter, and keep her nice and warm, lovely quality, colours and price. 18 October 2015
Rated 5 out of 5 Such a cute outfit Fab quality and such a reasonable price ..especially with the other stores doing a similar dress for almost double the price and not as nice as this I'm very happy x x x 17 October 2015
Rated 5 out of 5 by Kids loved it! I bought matching ones for my son and daughter (2 and 3) and they LOVE them, great quality for the price. The do come up quite large but it just means they will last longer. :) 09 October 2015
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