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Kids Harry Potter Thermal Slipper Socks - Blue

Maximum Thickness | Ideal For At Home | TOG 2.3
  • £4.99
  • SAVE £7
  • Regular price £11.99

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Heat Holders

These Kids Harry Potter Thermal Slipper Socks in Blue design are perfect for relaxing and playing at home. They feature Harry Potter from the iconic books and movies in a Ravenclaw blue design with lightning-bolt grippers on the sole.

Our licensed character children's thermal slipper socks evoke all the fun, action and colour of the world’s most popular movies, comics and cartoons. They make the perfect gift for any fan, so they can take their favourite characters with them wherever they go!

Non-slip grippers on the sole of each sock keep kids steady on polished wood or floor tiles.


UK 9-12, EUR 26-30, US 10-13

UK 12½-3½, EUR 31-36, US 1½-4½

Length: Crew length socks

Fibre Composition: 91% Acrylic, 5% Nylon, 3% Polyester, 1% Elastane

Additional Features: Non-slip grippers

Machine Washable at 40°C. Heat Holders can be tumble dried but are happiest when line dried.

ORIGINAL Thickness Explained

couple wearing heat holders socks with boots
  • Our warmest and thickest socks
  • Unbeatable TOG rating of 2.3
couple wearing heat holders socks in pyjamas
  • Over 2X warmer than an ordinary thermal sock
  • Over 7X warmer than a basic cotton sock
close up of inside of heat holders sock
  • Ideal for wearing with boots or relaxing at home
  • The Ultimate Thermal Sock
Featuring advanced Japanese-designed thermal yarn, UK PATENTED long looped cushion pile, and an expert brushing process to hold more warm air close to your skin, Heat Holders Original are famous as ‘The Ultimate Thermal Sock’. When you wear them, you’ll quickly see why.

Our Other Thicknesses

lite socks with packaging example
  • Medium-weight socks with a TOG rating of 1.6
  • Perfect for wearing with casual fitting shoes
ultra lite socks with packaging example
  • Our lightest thermal socks with a TOG rating of 1.0
  • Ideal to wear with tighter fitting shoes

Heat Holders Technology

heat holders illustration of Japanese-designed thermal yarn

Japanese-designed thermal yarn provides insulation with superior breathability and softness.

heat holders illustration of innovative knitting technology

Innovative knitting technology produces our UK PATENTED long loop cushion pile to hold more warm air.

heat holders illustration of expert brushing process

Our expert brushing process maximises the amount of warm air held in for unbeatable warmth.

heat holders illustration of HEATWEAVER® Insulation

HEATWEAVER® Insulation is a plush fur-like thermal lining that maximises the air held close to the body.

5 Star Service

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Free UK Delivery & Returns

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Over 40,000 5 Star Reviews

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Customer Reviews

Based on 2 reviews
A H.
Disappointed labelled ‘Girls’ and ‘Boys’

Bought two pairs of these kids Harry Potter socks (purple and blue). The product looks good (not used yet- purchased to give as a present) but disappointed that the packaging is labelled ‘girls’ for the purple socks and ‘boys’ for the blue socks. This isn’t mentioned in the product description. There is a photo showing the packaging but I didn’t notice that the packaging had girls/boys labelling. I can’t now give the socks as a present to the intended recipient, which is annoying.

Thank you for taking the time to leave feedback for your socks and sorry to hear of the issue this has caused you.
We can confirm the gender has been taken off of all new packaging, but this does not include existing stock.
Private reply also sent to customer ...


I got these for my 8 year old son who does a lot of out door activities to put with his wellies, as he suffers with the cold. Warm feet means happy child! Feet were kept very warm. Harry Potter made it that extra bit special.