Update your browser for a better shopping experience!

Get faster load times, stronger security and access to all features.

Skip to content

SALE: now up to 70% off
Just arrived: new styles you need to see
M&S Rewards Credit Card - find out more

Search product, code or brand

Sign in

Sign in or create an account:

for faster checkout
to unlock personalised Sparks offers
to access order history and track deliveries

Sign in
Create an account
M&S Recipes
Guest order tracking
Guest order return
Sparks
Sparks Pay

0

Search product, code or brand

Sale

All Women's sale
Coats & Jackets
Dresses
Jumpers & Cardigans
Shirts & Blouses
Trousers

All Men's sale
Coats & Jackets
Jumpers & Cardigans
Shirts
Trousers
Underwear & Socks

All Brands sale
Women's brands sale
Men's brands sale
Kids' brands sale
Lingerie sale

All Homeware sale
Bedding sale

All Jaeger sale

All Kids' sale
Baby
Boys
Girls

Sportswear sale

All Sportswear sale

Lingerie & Nightwear sale

All Lingerie sale
Bras
Knickers
Nightwear
Socks & Tights

All Beauty sale
Beauty Gifts sale

Lingerie & Nightwear sale

Sportswear sale

Women

Cardigans
Cashmere
Coats and Jackets
Dresses
Holiday Shop
Jeans
Jumpers
Shirts and Blouses
Skirts
Sportswear
Swimwear
Tops
Trousers

All Dresses
Maxi Dresses
Midaxi Dresses
Midi Dresses
Mini Dresses

All Footwear
Boots
Shoes
Slippers
Trainers

All Accessories
Handbags & Bags
Hats
Jewellery
Scarves

Lingerie & Nightwear

Bras
Knickers
Nightwear

Body Fit & Maternity

Curve
Maternity
Petite
Tall

New In Clothing

Value You Can Trust

Our January Top Picks

New City Essentials

Off-Duty Dressing

Chocolate Brown

Lingerie

All Bras
Balcony Bras
First Bras
F-K Bras
Full Cup Bras
Maternity and Nursing Bras
Non-Wired Bras
Post-Surgery Bras
Padded Bras
Sports Bras
Strapless Bras

All Knickers
Brazilian Knickers
Full Brief Knickers
High-Leg Knickers
Multipack Knickers
No-VPL Knickers
Period Knickers
Thongs

All Shapewear
Anti-Chafing Shorts
Bodies
Shaping Knickers
Slips

All Nightwear
Dressing Gowns
Loungewear
Nightdresses
Pyjamas
Pyjama Sets
Slippers

Socks & Tights

Socks
Tights

Thermals & Vests

Thermals
Vests & Camis

Value You Can Trust

Book your Bra Fit

Men

Clothing

Best Sellers
Cashmere
Chinos
Coats and Jackets
Hoodies and Sweatshirts
Holiday Shop
Jeans
Joggers
Knitwear
Polo Shirts
Shirts
Sportswear
Trousers
T-Shirts

Nightwear & Underwear

All Nightwear
Dressing Gowns
Pyjamas
Socks
Thermals
Vests
Underwear

Suits & Formalwear

Blazers
Formal Shirts
Smart Trousers
Suits
Tuxedos
Book Your Suit Fit

Footwear

All Footwear
Boots
Casual Shoes
Slippers
Smart Shoes
Trainers

Accessories

All Accessories
Bags
Belts
Gloves
Hats
Scarves
Men's Grooming

New In Clothing

Value You Can Trust

Winter Clothing & Accessories

Kids

Girls (2yrs-16yrs)

Accessories
Coats and Jackets
Dresses
Footwear
Jeans
Joggers
Jumpers and Cardigans
Leggings
Nightwear
Outfits and Sets
Skirts
Socks and Tights
Tops
Underwear and Thermals

Boys (2yrs-16yrs)

Accessories
Coats and Jackets
Footwear
Jeans
Joggers
Jumpers and Sweatshirts
Nightwear
Outfits and Sets
Shirts
Socks
Trousers
Tops
Underwear and Thermals

Baby Boy
Baby Girl
Baby Coats
Baby Grows
Baby Outfits
Newborn Clothing
Explore our Baby Club

All Toys

Boys' Uniform
Girls' Uniform
School Shoes

Everyday Essentials

Winter Clothing & Accessories

Home

All Bedding
Bed Sheets
Duvets
Duvet Covers & Sets
Mattress Protectors
Pillows
Pillowcases

Cooking & Dining

Dinner Sets
Glassware
Kitchenware
Mugs
Pots & Pans
Tableware

Home Furnishings

All Home Furnishings
Cushions
Curtains
Rugs
Throws

All Bathroom
Bath Mats
Towels

All Lighting
Ceiling Lights
Floor Lamps
Table Lamps

Home Accessories

All Home Accessories
Artificial Flowers & Plants
Home Fragrance
Vases & Plant Pots

All Furniture
Sofas & Accent Chairs
Bedroom Furniture
Dining Room Furniture
Garden Furniture
Living Room Furniture
Mattresses

Travel

Suitcases & Luggage

Home Essentials

Sports

Women's Sportswear

All Women's Sportswear
Sports Bras
Sports Coats and Jackets
Hoodies and Sweatshirts
Joggers
Sports Leggings
Sports Tops

Women's Sports Trainers

Running Trainers
Walking and Hiking Trainers

Women's Shop by Activity

Gym
Running
Walking and Hiking

Men's Sportswear

All Men's Sportswear
Sports Coats and Jackets
Hoodies and Sweatshirts
Joggers
Sports Shorts
Sports Tops
Sports Trousers

Men's Sports Trainers

Running Trainers
Walking and Hiking Trainers

Men's Shop by Activity

Gym
Running
Walking and Hiking

New In Women's Sports

Women's Athleisure

Beauty

All Skincare
Cleansers
Eye Cream
Moisturisers
Serum
Face Masks
Sun Cream

All Makeup
Beauty Accessories
Blushers
Foundation
Lipstick
Mascara
Nail Care

All Bath & Body
Hand Cream
Hand Wash
Shower Gel
Travel Size Toiletries
Wellbeing

Fragrance

Women's Perfume
Men's Aftershave

All Haircare
Conditioner
Hair-Styling Accessories
Shampoo

All Beauty Gifts
Bath & Body Gifts
Perfume Gifts
Skincare Gifts
Make-Up Gifts
Men's Gifts

All Men's Grooming
Men's Aftershave
Men's Gifts
Moisturisers

The Unwind Edit just £30, worth £142

Flowers

Flowers

New in
All Bouquets
Celebrity Collections
Rose Bouquets
Spring Flowers

All Plants
Indoor Plants

Shop by Delivery

Next Day Delivery Flowers
Next Day Delivery Plants
Sunday Delivery Flowers

Occasions

Anniversary Flowers
Birthday Flowers
Congratulations Flowers
Engagement Flowers
New Baby Flowers
New Home Flowers
Thank You Flowers
Sympathy Flowers

Gift Bundles

Floral Gift Bundles
Plant Gift Bundles
Flowers & Chocolate Bundles

Floral Gift Bundles

Birthday Flowers

Celebrity Collections

Gifts

Food & Drink Gifts

All Food and Drink Gifts
Afternoon Tea and Coffee Gifts
Alcohol Gifts
Food Gifts
Fruit Baskets
Hampers
Letterbox Gifts

Gifts by Price

Free Delivery Gifts
Gifts Under £20
Gifts Under £30
Gifts Under £50
Luxury Gifts

Gifts by Recipient

Gifts For Her
Gifts For Him
Gifts For Kids
Baby Gifts

Gifts by Occasion

Anniversary Gifts
Birthday Gifts
Congratulations Gifts
Housewarming Gifts
Valentine's Day Gifts

Gifts for the Family

Gifts for Mum
Gifts for Dad
Gifts for Brother
Gifts for Sister
Gifts for Grandma
Gifts for Grandad

All Gift Cards

Gift Cards
E-Gift Cards
Corporate Gifts

Food & Drink Gifts

Food

Cakes
Party Food
Sandwich Platters

Food & Drink Gifts

Alcohol Gifts
Brownies
Food Gifts
Hampers
Letterbox Gifts

Cooking & Dining

M&S x Tom Kerridge
Kitchenware
Pots & Pans

Drinks
Food Cupboard
Frozen Food
Fruit & Vegetables
Home of Health
Home of Dine In
Meat
New In Foodhall
Nutrient Dense
Poultry
Ready to Cook

Food Inspiration

Best in Season
Budget
Cooking Tips
Foodhall Picks
Health
M&S Café

Budget Recipes
Dinner Recipes
Healthy Recipes
Midweek Meal Recipes
Winter Recipes

Food Inspiration

Food & Drink Gifts

Offers

Shop all Women's Offers

20% off selected Women’s Coats
20% off selected Women's Boots
20% off Women’s Hats Gloves Scarves

Shop all Home Offers

20% off Home Fleece & Brushed Bedding
Up to 40% off Bedding
Up to 40% off selected Kitchenware
Up to 40% off selected Towels

Shop all Kids' Offers

Mamas & Papas Offers

Shop all Men's Offers

20% off Footwear & Slippers
3 for £22 on selected T-Shirts
Sartorial Shirts offers
4 for £149 on Charles Tyrwhitt Shirts & Polos
Rodd & Gunn Offers

Shop all Beauty Offers

The Unwind Edit just £30, worth £142
50% off Night in kit from &Sleep
25% off Selected Clinique Jumbos

20% off selected Women’s Coats

20% off Women’s Boots

20% off Fleece & Brushed Bedding

20% off Women’s Hats Gloves Scarves

Up to 40% off Home

The Unwind Edit just £30, worth £142

Money

Credit Card

M&S Rewards Credit Card
Club Rewards
M&S Credit Card Transfer Plus
M&S Credit Card Purchase Plus
Our Credit Cards
Mobile App

Insurance

Home Insurance
Pet Insurance
Car Insurance
Travel Insurance

Sparks Pay

Sign In

Travel Services

Travel Money
Exchange Rates

Additional Services

Saving & Investing
Personal Loans
Financial Support
Internet Banking

Find store Sparks

Help Contact Us Register

United Kingdom(£GBP)

Select Country / Region

Select Language

Free delivery when you spend over £60*

Next-day Click & Collect

Free returns for online orders

Black Grey Pyjama sets T shirts Puffer jacket Ankle boots Raincoat Chinos Fleece jackets Trunks Sandals Baby shoes Briefs Ankle socks Bomber jackets Dungarees Rugby tops Slipper socks Top & bottom Blazer Backpack Chelsea boots Gilet Pumps Shackets Baby socks Boat shoes Fleece tops Pre-walker Snoods T bar All in one Brogues Cargo trousers Mid calf boots Parka Plimsolls Sleepsuits Sport socks Thermal socks Trainer socks Welly socks Chino shorts Hooded towels Shoe boots Swim trunks Thermal sets Top and short sets Walking shoes

You are here:

Home
Kids
Boys
Thermal socks

Boys' Thermal Socks

Warm their toes on chilly days with our boys' thermal socks, available in handy multi-packs. You'll find black, grey and navy options that are perfect for wearing with school uniform. Added stretch makes our pairs extra comfy, and subtle ribbed details help to hold them in place. Look for fabrics featuring Freshfeet technology to keep odours at bay

There are 2 Items found

Kids Sizes with 4 options
12½-3½ Large
(2)
4-7 Large
(2)
7½-10½ Large
(2)
8½-12 Small
(2)
Colour with 2 options
Black
(1)
Grey
(1)
Style with 94 options
Trainers
(82)
Pyjama sets
(60)
Joggers
(57)
Hoodies
(47)
Wellies
(46)
Jumpers
(42)
Sweatshirts
(40)
Tops
(37)
T shirts
(30)
School shoes
(29)
Thermals
(28)
Coats
(25)
Jackets
(25)
Shirts
(25)
Trousers
(24)
Jeans
(23)
Slippers
(20)
Puffer jacket
(18)
Cargos
(16)
Ankle boots
(15)
Outfits
(15)
Swim shorts
(15)
Clogs
(14)
Raincoat
(14)
School socks
(14)
Chinos
(13)
Fleece jackets
(13)
Trunks
(13)
Sandals
(12)
Baby shoes
(11)
Briefs
(10)
Ankle socks
(9)
Polo shirts
(9)
Shorts
(9)
Bomber jackets
(8)
Dungarees
(8)
Lunch boxes
(8)
Rugby tops
(8)
Slipper socks
(8)
Swim outfit
(8)
Pyjamas
(7)
Gilets
(6)
Leggings
(6)
Long sleeve tops
(6)
Top & bottom
(6)
Blazer
(5)
Dressing gowns
(5)
Rash vests
(5)
Vests
(5)
Backpack
(4)
Chelsea boots
(4)
Gilet
(4)
Pumps
(4)
Shackets
(4)
Baby socks
(3)
Boat shoes
(3)
Fleece tops
(3)
Pre-walker
(3)
Snoods
(3)
T bar
(3)
Top and bottom set
(3)
All in one
(2)
Borg jacket
(2)
Brogues
(2)
Cardigans
(2)
Cargo trousers
(2)
Mid calf boots
(2)
Oversized hoodies
(2)
Parka
(2)
Plimsolls
(2)
Ponchos
(2)
Pram suit
(2)
Sleepsuits
(2)
Snowsuits
(2)
Sport socks
(2)
Swimsuits
(2)
Thermal socks
(2)
Trainer liners
(2)
Trainer socks
(2)
Welly socks
(2)
Chino shorts
(1)
Hooded towels
(1)
Lace up shoes
(1)
Men's casual shoes
(1)
Onesies
(1)
Shirt And Waistcoat Set
(1)
Shoe boots
(1)
Swim seat
(1)
Swim trunks
(1)
Thermal sets
(1)
Top and short sets
(1)
Trekkers
(1)
Waistcoats
(1)
Walking shoes
(1)
£5
£20
Minimum valueMaximum value

Thermal socks

There are 2 Items found

Sort by

3 Pack Heatgen™ Thermal Ankle Socks (8½ Small to 10½ Large)

3 Pack Heatgen™ Thermal Ankle Socks (8½ Small to 10½ Large)

3 Pack Heatgen™ Thermal Ankle Socks (8½ Small to 10½ Large)

3 Pack Heatgen™ Thermal Ankle Socks (8½ Small to 10½ Large)

Don't miss out

Register to receive exclusive offers tailored to you, plus rewards and promotions before anyone else. Just select ‘YES’ on the next page and never miss a thing.

Sign up for the newsletter

Ways to pay

Spread The Cost

Here to Help

Help & contact us
Our stores
Accessibility in our stores
Product recalls
Site map

Delivery & Returns

Where's my order?
Delivery & collection
Guest order tracking
Guest order return
Returns & refunds

Shopping with Us

Sparks
Sparks FAQs
Gift card balance
Size guides
Sustainability

More from M&S

Ocado
Corporate site
M&S Corporate Gifts
M&S Money
M&S Opticians
Careers

© 2026 Marks and Spencer plc (UK)Terms & Conditions Privacy CookiesAccessibility Modern Slavery Act