Youth Thermal Base Layers: Warm, Technical Cold Weather Wear

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  • Youth Single Layer Crewneck

    Youth Single Layer Crewneck

    Soft, jersey knit for everyday use.

    $ 30.00
  • Youth Single Layer Tight

    Youth Single Layer Tight

    Soft, jersey knit for everyday use.

    $ 30.00
  • Youth MicroFleece Crew

    Youth MicroFleece Crew

    Lofty stretch micro fleece for colder conditions. Easy to layer.

    $ 50.00
  • Youth MicroFleece Tight

    Youth MicroFleece Tight

    Lofty stretch micro fleece for colder conditions. Easy to layer.

    $ 50.00
  • Youth MicroFleece Zip-T

    Youth MicroFleece Zip-T

    Lofty stretch micro fleece for colder conditions. Easy to layer.

    $ 63.00
  • Youth Double Layer Crewneck

    Youth Double Layer Crewneck

    Comfortable, easy fitting top for multi-purpose outdoor activities

    $ 34.00
  • Youth Double Layer Tight

    Youth Double Layer Tight

    Comfortable, easy fitting bottoms for multi-purpose outdoor activities

    $ 34.00
  • Youth Active Stretch Bottom

    Youth Active Stretch Bottom

    Ideal for performance sports or casual wear

    $ 40.00
  • Youth Active Stretch Crew

    Youth Active Stretch Crew

    Ideal for performance sports or casual wear

    $ 40.00
  • Youth Mountain Fleece Zip-T

    Youth Mountain Fleece Zip-T

    Soft, breathable fleece warmth built for cold-weather comfort

    $ 63.00
  • Youth Mountain Fleece Crew

    Youth Mountain Fleece Crew

    Soft, breathable fleece warmth built for cold-weather comfort

    $ 55.00
  • Youth Mountain Fleece Bottom

    Youth Mountain Fleece Bottom

    Soft, breathable fleece warmth built for cold-weather comfort

    $ 55.00
  • Youth Merino Wool Crewneck

    Youth Merino Wool Crewneck

    $ 50.00
  • Youth Merino Wool Tight

    Youth Merino Wool Tight

    $ 50.00
  • Toddler Double Layer Set

    Toddler Double Layer Set

    $ 45.00

It’s no secret that kids love playing outside in the snow. However, it’s not uncommon for them to want to go out there without the proper protection from the cold. Understandably, their biggest complaint is that their warmer clothing is too thick to move in. That’s why you need to buy them a set of youth thermals.

Our youth base layers are designed to keep kids warm while still giving them free range of motion. This is perfect for children who want to go sledding or throw snowballs at each other. As a parent, you’ll be able to rest easy knowing that the youth thermal underwear your kids have on is keeping them safe. Be sure to take the time to look through our entire selection of youth thermals to find the ones that will best suit your child’s needs.

Product Comparison

Comparison of product collections by fabric, warmth, weight, and features
Collection Fabric Content GSM Warmth Weight Stretch Best For Not Ideal For Origin Link
Double Layer 100% Polyester 150 Medium Midweight Dual-layer / Mechanical Stretch Sustained cold, moderate activity, layering under looser fitting outerwear High-output activity, mild conditions, use under snug fitting bottoms Imported View Double Layer →
Military Fleece 100% Polyester 160 Maximum Midweight-Heavy Mechanical Stretch Extreme cold-weather base layers during low-to-medium activity High-output activities in cool weather Imported View Military Fleece →
Merino Wool 67% Polyester / 28% Merino / 5% Spandex 175 Medium Midweight Four-way / Flexible Cold conditions, moisture management, odor control, multi-day wear Heavy-duty work use or warm weather Imported View Merino Wool →
Single Layer 100% Polyester 175 Light Lightweight Mechanical Stretch High-output or dynamic activity requiring maximum breathability Very cold or stationary conditions Imported View Single Layer →
Active Stretch 84% Polyester / 16% Spandex 180 Medium Midweight Four-way / High-mobility High-movement cold-weather activity, skiing, snowboarding, outdoor work Low-output stationary use or extreme cold where warmth is top priority Imported View Active Stretch →
Mountain Fleece 100% Polyester 205 Maximum Heavyweight Mechanical Stretch Very cold conditions, low-to-moderate activity, all-day warmth High-output or dynamic activity Imported View Mountain Fleece →
Microfleece 92% Polyester / 8% Spandex 230 Medium-Heavy Midweight-Heavy Four-way / Flexible Heavy-duty work use or cold weather High-output activity Imported View Microfleece →
Wool Double Layer 70% Polyester, 30% Wool Outer; 100% Polyester Inner 230 Medium-Heavy Midweight-Heavy Dual-layer / Mechanical Stretch Very cold conditions, low-to-moderate activity, all-day warmth High-output, warm weather or dynamic activity Imported View Wool Double Layer →

Double Layer

Fabric Content
100% Polyester
GSM
150
Warmth
Medium
Weight
Midweight
Stretch
Dual-layer / Mechanical Stretch
Best For
Sustained cold, moderate activity, layering under looser fitting outerwear
Not Ideal For
High-output activity, mild conditions, use under snug fitting bottoms
Origin
Imported
View Double Layer →

Military Fleece

Fabric Content
100% Polyester
GSM
160
Warmth
Maximum
Weight
Midweight-Heavy
Stretch
Mechanical Stretch
Best For
Extreme cold-weather base layers during low-to-medium activity
Not Ideal For
High-output activities in cool weather
Origin
Imported
View Military Fleece →

Merino Wool

Fabric Content
67% Polyester / 28% Merino / 5% Spandex
GSM
175
Warmth
Medium
Weight
Midweight
Stretch
Four-way / Flexible
Best For
Cold conditions, moisture management, odor control, multi-day wear
Not Ideal For
Heavy-duty work use or warm weather
Origin
Imported
View Merino Wool →

Single Layer

Fabric Content
100% Polyester
GSM
175
Warmth
Light
Weight
Lightweight
Stretch
Mechanical Stretch
Best For
High-output or dynamic activity requiring maximum breathability
Not Ideal For
Very cold or stationary conditions
Origin
Imported
View Single Layer →

Active Stretch

Fabric Content
84% Polyester / 16% Spandex
GSM
180
Warmth
Medium
Weight
Midweight
Stretch
Four-way / High-mobility
Best For
High-movement cold-weather activity, skiing, snowboarding, outdoor work
Not Ideal For
Low-output stationary use or extreme cold where warmth is top priority
Origin
Imported
View Active Stretch →

Mountain Fleece

Fabric Content
100% Polyester
GSM
205
Warmth
Maximum
Weight
Heavyweight
Stretch
Mechanical Stretch
Best For
Very cold conditions, low-to-moderate activity, all-day warmth
Not Ideal For
High-output or dynamic activity
Origin
Imported
View Mountain Fleece →

Microfleece

Fabric Content
92% Polyester / 8% Spandex
GSM
230
Warmth
Medium-Heavy
Weight
Midweight-Heavy
Stretch
Four-way / Flexible
Best For
Heavy-duty work use or cold weather
Not Ideal For
High-output activity
Origin
Imported
View Microfleece →

Wool Double Layer

Fabric Content
70% Polyester, 30% Wool Outer; 100% Polyester Inner
GSM
230
Warmth
Medium-Heavy
Weight
Midweight-Heavy
Stretch
Dual-layer / Mechanical Stretch
Best For
Very cold conditions, low-to-moderate activity, all-day warmth
Not Ideal For
High-output, warm weather or dynamic activity
Origin
Imported
View Wool Double Layer →