View all Best Sellers

HEAT HOLDERS ULTRALITE

Ladies Ultra Lite Holly Socks - Black

Minimal Thickness | Ideal For Tighter Fitting Shoes | TOG 1.0

Regular price £7.99
SAVE £-7.99

Shop the Ladies Ultra Lite Holly Sock Bundle and save. Take me there

Alternate Colours

Indigo

Deep Fuchsia

Muted Pink

Purple

Quantity

Free UK shipping

International shipping calculated at checkout

These Ladies Ultra Lite Holly Socks in Black are specially designed to fit comfortably inside tighter-fitting and formal shoes. With an amazing 1.0 TOG rating, these thermal socks are three times warmer than a basic cotton sock, so you get more of our famous thermal protection with less of the bulk.

Formal and tighter-fitting shoes can often feel cold to wear. Not only do they offer less insulation than casual shoes, but most of the socks that will fit inside them provide little or no thermal protection.

Heat Holders Ultra Lite are different!

Size: UK 4-8, EUR 37-42, US 5-9

Length: Crew length socks

Fibre Composition: 89% Acrylic, 10% Nylon, 1% Elastane

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

Learn More From Our FAQs

ULTRA LITE Thickness Explained

Our lightest thermal socks
TOG rating of 1.0

3X warmer than an ordinary cotton sock
Designed for wearing in tighter fitting shoes

Ideal for everyday wear
Available in a selection of colours and designs

Meet our lightest thermal sock, designed to fit comfortably in tighter fitting shoes. Made with advanced Japanese-designed thermal yarn, short looped cushion pile and an expert brushing process to hold more warm air next to your skin, these socks give you our famous thermal protection with less bulk.

Our Other Thicknesses

ORIGINAL

Our warmest and thickest socks with a TOG rating of 2.3
Perfect for boots or when relaxing at home

LITE

Medium-weight socks with a TOG rating of 1.6
Perfect for wearing with casual 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

Free UK Delivery & Returns

Over 40,000 5 Star Reviews

Next Day Delivery Available

Lived up to my expectations!

These socks were warm and cosy, and were a perfect fit in my fitted boots.
I have ordered two more pairs, in a floral design, as Raynaud’s Syndrome means warm socks are a necessity.

Second purchase ready for winter

I wore my first order of heat holder socks last winter and was so delighted with them that I ordered more pairs for the upcoming winter so I didn’t need to wash my previous ones so often. Warm & cosy and keep my feet comfortable indoors and outdoors. I have ordered a few pairs for my husband this time as he also suffers from cold feet in the winter season. Waiting to see how he finds them!!!

Nice and warm

Good socks nice and warm. They wash well.

Not as lite as I thought still
useful though

Excellent

I love it. It keeps my feet warm always

1 2 3

Over 40,000 5 Star Reviews

"These are the warmest socks I have ever worn. They are especially good in wellies or boots when the weather is icy."

Sarah

Rambler and avid walker

“These are the warmest socks I've ever worn without making your feet 'sweaty'”

Jayne

Dog Walker

“Just the job! My feet have never been warmer in winter - will definitely buy some more”

Derek H

Angler

“These socks are great for cold weather at the allotment and even better for walking the dogs in winter conditions.”

Mr Armstrong

Allotment Holder

FAQs About Our Ultra Lite Socks

Are Heat Holders the warmest thermal socks in the world?

As far as we know and based on all the tests carried out so far, Heat Holders socks are indeed the warmest thermal socks in the world.

How do Heat Holders socks work?

There are no batteries, switches, solar panels or other gimmicks! Heat Holders thermal socks are made using our unique three-stage thermal construction:

1. Heat Holders thermal yarn: Our advanced Japanese-designed thermal yarn provides high-performance insulation with superior softness and moisture-minimising breathability.

2. Heat Holders thermal loops: Our innovative knitting technology produces our PATENTED long-loop cushion pile to hold more warm air close to the skin, boosting the socks' thermal overall grade (TOG) rating.

3. Heat Holders thermal brushing: Our expert brushing process maximises the amount of warm air held within the fabric of the socks for unbeatable warmth and all-day comfort.

What is a TOG rating?

TOG (Thermal Overall Grade) is an independent laboratory-tested standard for insulation. The higher the TOG rating, the better the product is at keeping you warm. You’ll see TOG ratings applied to duvets and babywear, as well as thermal clothing like Heat Holders.

How warm are Heat Holders Ultra Lite socks?

As far as we know and have ever tested, all three weights of Heat Holders socks (Original, Lite and Ultra Lite) are the warmest thermal socks in their respective weight/thickness categories.

Our Ultra Lite socks have a TOG of 1.0 TOG, which is 3 x warmer than a basic cotton sock.

Show More FAQs

HEAT HOLDERS ULTRALITE

Ladies Ultra Lite Holly Socks - Black

ULTRA LITE Thickness Explained

Our Other Thicknesses

Heat Holders Technology

5 Star Service

Recently viewed products

Customer Reviews

Over 40,000 5 Star Reviews

FAQs About Our Ultra Lite Socks