Alpine Kids' Thermal Underwear Set

£10.00£20.00(Save 50%)

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Close-fitting and comfortable thermal baselayers designed to wear under your usual clothing for added warmth when you need it most.

Product code: 15996867 / 061086

Key Features

  • Lightweight, comfortable and warm thermal underwear
  • 100% Polyester construction – durable and comfortable
  • Flatlocked seams – reduces friction build up to avoid irritation
  • Recommended activity – trekking / snowsports / climbing
Fitness, Running, Skiing, Snowsports, Walking & Hiking
Kids, Unisex

Delivery & Returns

This product qualifies for the following delivery methods

Standard UK Delivery (3-5 days) (£4.95)

FREE on orders over £80.00


A tracking link will be provided once your order is despatched.

Bike Delivery (3-5 days) (£4.99)


Bike delivery is £4.99. This applies to all bikes, and these orders are upgraded to a DHL courier service.

Standard Next Day Delivery (£5.95)


Premium Next Day Delivery (£6.95)


Collect from Store (£3.95)


Delivery times and days vary for each store, but we will contact you when your order is ready to collect. Please do not contact our Customer Care team for updates until after the estimated delivery time in your order confirmation email.

International delivery

From £4.99 to over 200 countries worldwide. Some restrictions apply.


Returning orders to us is easy. Whatever your reason, we offer a refund or exchange within 28 days of delivery or collection.

Size guide

3-4 38.5 - 41" 20.5 - 21" 21 - 22"
5-6 43 - 45.5" 21.5 - 22" 22.5 - 24"
7-8 48 - 50" 22 - 22.5" 25 - 26"
9-10 52.5 - 55" 23 - 24.5" 26.5 - 28"
11-12 57.5 - 60" 25 - 25.5" 29 - 31"
13 62 - 64.5" 26 - 26.5" 31 - 34"
3-4 98-104cm 53-54cm 54-56cm
5-6 110-116cm 55-56cm 58-61cm
7-8 122-128cm 56-57cm 63-66cm
9-10 134-140cm 58-62cm 68-71cm
11-12 146-152cm 64-65cm 73-78cm
13 158-164cm 66-67cm 78-87cm

Kids Clothing size guide

Measuring tips

Take your actual body measurements as they are more accurate than measuring over your clothes or shoes.

Collar: measure around the base of the neck where the collar sits.

Chest: measure the chest at the fullest part, placing the tape close up under the arms.

Waist: measure the natural waistline.

Inside Leg: measure from the crotch to where your trouser is normally worn on the shoe.

Jacket Length: measure from the centre back of your neck to your hemline. Then length measurement will vary depending on the style.

Feet: Use a ruler or tape measure to measure your foot (from the heel to the tip of your longest toe) Be sure to measure both feet. Many people have feet of different sizes. Fit to the larger of the two.


Overall Rating

4.4 stars 4.4 / 5 (based on 18 Reviews)
Write a review
4 out of 5

Good quality and looks very warm

4 out of 5

Value for money

4 out of 5

Perfect for keeping warm in winter. Stylish too.

4 out of 5

Good quality, good price, thank you

4 out of 5

Good quality products, reliable and fast delivery. Excellent.

4 out of 5

To small

4 out of 5

Soft and warm for my child.

4 out of 5

Good quality true to size

4 out of 5

Perfect fit and good for purpose

4 out of 5

Fits well and looks good.

4 out of 5

Good quality keeps my son warm in the cold days. My son takes it for football and he said it keeps him warm

4 out of 5

Not good @@@@@@@@@@@@@@@@@@@@@

4 out of 5

Fast and efficient service

4 out of 5

Received very fast delivery

4 out of 5

Good fit and good quality product.

4 out of 5

Extra fsst delivery super quality goods i will buy from blacks again thankyou .

4 out of 5

Ordered the kids thermal tops and bottoms. Good quality product well worth £8.50

4 out of 5

Stylish and good quality

Just a few days back bought these for my 8 year old son. Its stylish and he loves it. Good quality too. Came looking for more but cant see his size (7-8). So a little disappointed

Q&A (3)

Can these be worn underneath pajamas

22nd May 2019, submitted by Stephen Finley

Hi Stephen. Yes as these are a next to skin base layer, with a tight fit. Many Thanks.

22nd May 2019
1 of 1 people found this question useful.
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Can these be worn under pajamas ,when camping many thanks

22nd May 2019, submitted by Stephen Finley

Hello Stephen. This set of kids underwear would be the great for using as PJ's while camping. Many Thanks.

22nd May 2019
1 of 1 people found this question useful.
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Hi basically I'm going on holiday and I wanted a thermal swimwear so when my son is in the beach he won't feel cold in water

14th Jan 2019, submitted by Seema

Hi Seema Thank you for your question. This kids thermal underwear set is comfortable and warm. It is designed to be used as a next to skin layer. I would not recommend this product getting wet though as it will loose the heat and comfort that you are looking for. Many Thanks Stuart

15th Jan 2019
0 of 1 people found this question useful.
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