10 Best Thermal Underwear For Kids 2021
Keeping your kids warm while they enjoyed playing soccer or any other outdoor activity is very important for their health. I listed here the 10 best thermal underwear for kids that will surely keep them active and stay healthy even when the weather is not too kind outside.
These thermal underwears are basically a 2-piece shirt and legging that your kid can wear under his or her usual soccer training shorts and shirts, and best of all, they can be worn as pajamas at home.
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What Does Thermal Underwear Do?
Thermal underwear is a type of clothing that is made of special fabric. They are worn under the top layer of clothes to keep the body warm like on cold days or winter.
They are usually made of merino wool, silk, synthetic fabric like polyester, and spandex for elasticity. All the thermal underwear listed below is made of polyester and spandex.
Unlike wool and silk, polyester has some similar or better benefits for outdoor activities such as:
- Anti-odor – they do not produce a bad odor due to sweat.
- Moisture-wicking – they repel moisture such as sweat and keep the body and the underwear dry.
- Lightweight – No need to wear bulky clothing
- Breathable
- On the money side, they are cheaper than wool
The spandex material provides the elasticity that allows free movement when your kid is playing soccer, doing stretching exercises, or any other activities.
The thermal underwear sets below are selected from 100s that are listed online.
They are selected according to popularity, positive customer feedback, and quality.
The price of these thermal underwear sets ranged from $15 to $40, therefore, there is a set for everyone.
Please scroll down for a quick browse through or hit the link below to go directly to my product review.
1. Tesuwel Base Layer Athletic Compression Set
Features:
- Amazon Bestseller!!
- Piece: 2, 3, And 4 Piece Sets
- 35 Sets To Choose From (See All The Sets)
- 12% Spandex, 88% Polyester
- Pull-On Closure
- Breathable And Quick Drying
- Delicate Stretch Thread Neckline
- Tight Fitting Neck
- Double Lining
- Perfect Edge
- Pants Use Wide And Thick Rubber Band
Notes On Sizing:
- 5 – 16
- 71% Fit As Expected
- Some Parents Complain That The Sizes Run Small
- The 4-Piece Suit Will Run Small So Order One Size Up
What I Think:
This thermal wear is an Amazon bestseller for a variety of reasons.
Firstly, you have 35 choices of whether to buy 2, 3, or 4 piece sets. This gives your kid plenty of options to swap between the long or short pants, the hoodie, or the compression shirt.
Secondly, there are also sets for basketball, baseball, soccer, and football so your kid’s favorite sport is covered.
Thirdly, if there is more than 1 kid in the house the 4-piece set will definitely make everyone happy.
The issue with the sizing that some parents missed a piece of vital advice on the product page which specifically advised parents to order the 4-piece set one size up.
My Rating: 4.8 / 5
2. Thermajane Girl’s Ultra Soft Thermal Underwear
Features:
- Piece: 2
- 12 Colors To Choose From (See All The Sets)
- 92% Polyester 8% Spandex
- No Bad Odor
- Very Comfortable
- Breathable
- Stretchable
- Lightweight
- Inner Brushed Micro-Fleece
Note On Sizing:
- 88% Fit As Expected
- X-Small To X-Large
- Size Chart Is Provided In The Product Page
What I Think:
The Thermajane thermal underwear is designed for girls who are active outdoors.
With its 4-way stretch design, your kid will enjoy the freedom to perform without any movement restriction.
The fabric is made of cross knitted fibers with inner brushed microfleece that ensures no bad sweaty smell on your kid while maintaining comfort.
There are 12 exciting colors your kid can choose to match her favorite or her team colors with a good record for quality as well.
My Rating: 4.7/5
3. Devops Boys & Girls Thermal Heat-Chain
Features:
- Piece:2
- 6 Sets To Choose From (See All The Sets)
- 90% Ultra-Soft Polyester 10% Spandex
- Micro Fleece Lined
- Ultra Soft & Smooth
- Stretchy & Durable
- Heat Retention
- Suitable For Outdoor Activities
Note On Sizing:
- 81% Fit As Expected
- X-Small To X-Large
- Size Runs A Bit Large
- No Size CHat Provided
What I Think:
Affordable and of great quality, this unisex thermal underwear set is suitable for outdoor activities such as a game of backyard soccer.
This thermal underwear does a good job of heat retention and is durable allowing your kid to enjoy playing without worrying about the cold.
The size runs a bit large so choose a size smaller to fit your kid but without a size chart it is not helping either.
My Rating: 4.6/5
4. Rocky Thermal Underwear for Boys
Features:
- Amazon’s Choice!!
- Piece: 2
- 13 Sets To Choose From (See All The Sets)
- 92% Polyester 8% Spandex
- Comfortable
- Elastic Waistband
- Moisture Wicking Microfibers
- Suitable For Outdoor Activities
Note On Sizing:
- 79% Fit As Expected
- Size: X-Small To X-Large
- Few Users Reckon The Size Is A Bit Small
- Few User Reported Stitching Issues
What I Think:
The Rocky thermal underwear brand is currently Amazon’s bestseller. With 13 designs to choose from, I am sure your kid will love it.
It is constructed with 92% polyester so the wearer will feel that it is very comfortable with less bad odor due to its moisture-wicking properties.
Few users mentioned stitching issues but that is very minimal compared to a large number of satisfied buyers.
This is an excellent base layer for kids who play soccer, baseball, basketball, or just to wear and go to bed.
This design is for boys only as the set for girls is listed on number 6 below.
My Rating: 4.8/5
5. Terodaco Thermal Underwear
Features:
- Piece: 2
- 29 Sets To Choose From (See All The Sets)
- 88% Polyester 12% Spandex
- Pull-On Closure
- Breathable Fabric
- Elastic
- Moisture Wicking
- Suitable For Outdoors Sports
Note On Sizing:
- 87% Fit As Expected
- Size: 5 – 16
- Size Runs Small
- Seller Recommended Buyer Choose 1 Size Up
What I Think:
The Terodaco thermal underwear is highly preferred for its snug feeling and comfort by active kids.
The thermal underwear is sewn with seamless stitchwork and 4-way stretch technology to ensure durability and provides freedom of movement while keeping your kid warm.
Due to how it is constructed the seller specifically recommended you choose 1 size up when making a purchase.
It is a good base layer for wearing under a soccer jersey and shorts or normal wear without the need to put in bulky clothing.
My Rating: 4.8/5
6. Rocky Thermal Underwear for Girls
Features:
- Amazon’s Choice!!
- Piece: 2
- 13 Sets To Choose From
- 92% Polyester 8% Spandex
- Elastic Waistband
- Double Layer Long Knit Cuffs
- Can Be Worn As A Pajama Or For Outdoor Sports
Note On Sizing:
- 84% Fit As Expected
- X-Small To X-Large
- Size Chart Provided
- Size Runs A Bit On The Smaller Size
What I Think:
Rocky thermal underwear for girls like its boy’s counterpart (item number 4 above) offers the same comfort and durability.
They are fleece lined inside and feel silky on the outside making it a comfortable base layer or can be worn as a pajama.
They have double layer long knit cuffs to keep out the cold and an elastic waistband will fit your kid’s waist size.
There are 13 sets, similar to the boys, that you can choose to suit your kid’s preference.
My Rating: 4.8/5
7. Terodaco Boys Athletic Compression Pants & Shirts
Features:
- Piece: 3 And 4
- 8 Sets To Choose From (See All The Sets)
- 88% Polyester 12% Spandex
- Breathable
- Stretchable And Comfortable
Note On Sizing:
- Size: 6 To 16
- 76% Fit As Expected
- Size Chart Provided
- Size Runs A Bit Too Small
What I Think:
This Terodaco thermal underwear set also comes with a jacket and a short for each purchase. You are practically purchasing 4 pieces of high-quality clothing.
It is a deal you cannot resist because it is going to save some efforts (and money) having to look for a shirt and a short to put on the base layer.
The thermal underwear is made of 88% polyester and 12% spandex which are breathable, stretchable, and comfortable to wear.
There are 8 sets with different sport themes to match your kid’s favorite sport.
This is definitely a good deal for your money.
My Rating: 4.9/5
8. Thermajohn Boy’s Ultra Soft Thermal Underwear
Features:
- Piece: 2
- 9 Sets To Choose From (See All The Sets)
- 92% Polyester 8% Spandex
- Breathable And Moisture-Wicking
- High Performance And Stretchable
Note On Sizing:
- 93% Fit As Expected
- Size: X-Small To X-Large
- Sizing Is Almost Spot On
What I Think:
The Thermajohn has a very good sizing record that you will not be disappointed when your kid puts it on.
It is breathable which makes it easier to repel moisture that produces a bad smell from the sweat your kid produced from running around the outdoors.
The material is stretchable and can handle any outdoor activities that your kid may engage in.
The thing that stands out with this thermal underwear set is the exciting choice of colors that any boy would love to put on.
My Rating: 4.8/5
9. Baleaf Youth Thermal Compression Sports Shirts
Features:- 11 Colors To Choose From
- 92% Polyester | 8% Elastane
- Stretchy Fabric With Brushed Liner
- Crewneck Design | Normal Fit
- Reflective Logo
Note On Sizing:
- 88% True To Size
- Size: XS-XL
- Size Chart Provided
What I Think:
This Baleaf Youth Thermal Compression Sports shirt is a perfect base layer for boys and girls
Known for its durability due to its 4-way stretch technology and the flatlock stitch, the thermal underwear can withstand any outdoor activities.
The fabric is quick-drying so it will not produce any bad odor and remains lightweight and comfortable throughout the day.
Some parents complain that the size runs either large or small but most are satisfied. Perfect for a soccer game in the cold weather.
My Rating: 4.8/5
10. ViCherub Thermal Underwear Set Girls Kids
Features:- Piece: 2 & 4
- 5 Sets To Choose From (See All The Sets)
- 92% Other Fibers 8% Spandex
- Elastic CLosure
- Soft & Comfy
- Elastic Cuffs & Waistband
- Fleece Lining
Note On Sizing:
- 92% Fit As Expected
- Size: X-Small To X-Large (Size Chart Provided)
- Sizing Is Almost Accurate
What I Think:
This is one of the best thermal underwear on this list due to high positive feedback from customers who bought it.
Popular for its snug, comfortable, and warm feeling, a lot of girls are already falling in love with this thermal underwear.
This sizing is almost spot-on for buyers and users, an advantage other sellers don’t have for online shopping.
There are 5 exciting sets with different colors your kid will definitely love.
Best value for money.
My Rating: 4.9/5
Recommendation
Best Thermal for Girls
Best Thermal For Boys
Best Thermal For Boys And Girls
Care And Washing Tips
Care and Washing Tips
Thermal wears are not cheap and you will need more than just 1 pair. So taking care of your kids thermals is important because they will last longer and not losing its warmth properties.
While they do come with care and washing insructions here are recommended tips for you:
- Less washing cycle increases the longevity of your kids thermal – but that is not practical and unhygienic.
- Blended and 100% Cotton thermals
- Hand wash in warm water with mild detergent
- Hand on line to dry
- Machine wash is ok
- Do not tumble dry
- Woolen thermals
- Longer wrinse cycle
- Shorter spin cycle
- Spot cleaning of food or dirt use water and little detergent
- Hang them in direct sunlight (even when dry) to prevent bacteria formation
Conclusion
There you go, I hope you enjoyed my thermal underwear review.
As a general rule, go for thermal underwear that is lightweight and breathable.
Good thermal underwear should keep your active kid warm and comfortable during the cold weather.
Happy training and stay safe.