---
product_id: 155907084
title: "Thermal Underwear Boys Ultra Soft Fleece Lined Kids Thermals Long Johns Top Bottom Warm Set for Winter Skiing"
brand: "herobiker"
price: "$51.62"
currency: USD
in_stock: true
reviews_count: 13
category: "Herobiker"
url: https://www.desertcart.us/products/155907084-thermal-underwear-boys-ultra-soft-fleece-lined-kids-thermals-long
store_origin: US
region: United States of America
---

# Moisture-wicking breathable fabric Ultra-soft fleece lining for max warmth 4-way stretch for unrestricted movement Thermal Underwear Boys Ultra Soft Fleece Lined Kids Thermals Long Johns Top Bottom Warm Set for Winter Skiing

**Brand:** herobiker
**Price:** $51.62
**Availability:** ✅ In Stock

## Summary

> ❄️ Gear Up for Winter Wins with Ultimate Warmth & Flexibility!

## Quick Answers

- **What is this?** Thermal Underwear Boys Ultra Soft Fleece Lined Kids Thermals Long Johns Top Bottom Warm Set for Winter Skiing by herobiker
- **How much does it cost?** $51.62 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/155907084-thermal-underwear-boys-ultra-soft-fleece-lined-kids-thermals-long)

## Best For

- herobiker enthusiasts

## Why This Product

- Trusted herobiker brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless Comfort:** Flatlock stitching eliminates chafing for irritation-free wear
- • **Cozy All-Day Warmth:** Premium silky fleece lining keeps kids snug in freezing temps
- • **Stay Dry, Stay Fresh:** Advanced moisture-wicking fabric rapidly evaporates sweat for comfort
- • **Move Freely, Play Hard:** 4-way stretch compression supports active kids without bulk
- • **Versatile Winter Essential:** Perfect base layer for skiing, snowboarding, running, and everyday cold-weather adventures

## Overview

HEROBIKER Boys Thermal Underwear Set features ultra-soft polyester fleece lining combined with 4-way stretch spandex for superior warmth, breathability, and freedom of movement. Designed as a slim-fitting base layer, it wicks moisture efficiently and uses flatlock seams to prevent chafing, making it ideal for active kids during skiing, snowboarding, and cold-weather play.

## Description

Product Description

Review: A must have - My son hasn't taking these off since the snow hit! He loves the comfort and warmth.
Review: My little one didn't want to take them off! - I would give 10 stars if I could! I will be ordering more for my little guy. It was a struggle to get him to even let me wash them. He has issues with textures but these were perfect for him in every way. I ordered them for a trip to the mountains, thankfully they arrived 5 mins before we left (my fault for last min ordering). They are not thick and have a thin lining of fleece but they are smooth, soft and kept him very warm and comfortable on our hikes in the cold mountains. He wore them the entire trip barely letting me wash them. They wash well, no shrinking nor fading of the vibrant blue. This is definitely worth every penny. Thank you from me and my little one!

## Features

- ULTRA SOFT & WARM FABRIC: Kids Thermal Underwear is made of premium silky soft lining for excellent comfort and warmth in cold weather
- MOISTURE WICKING & BREATHABILITY: Breathable and moisture wicking fabric is perfect to keep sweat away and dry fast
- EXCELLENT FLEXIBILITY FOR ANY MOVEMENT: Four way stretch compression is designed for Freedom of Movement and to keep your Body Looking Slimmer. Flatlock stitching creates a flat seam to the garment to ensure maximum comfort and prevents chafing
- TOP & BOTTOM: Boys winter thermal underwear is super warm and soft on the inside and thins enough to fit under your any clothes comfortably. This thermal set definitely can be wore as an outdoor compression sports shirt
- FOR ANY OCCASION: This long johns set for cold weather. Idea for all kinds of indoor/outdoor activities, such as cycling, skiing, running, snowboarding, etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07WP29SPG |
| Age Range Description | Little Kid |
| Apparel Closure Type | Pull On |
| Best Sellers Rank | #493,329 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #57 in Boys' Thermal Underwear Sets |
| Brand Name | HEROBIKER |
| Care instructions | Machine Wash |
| Collection Name | thermal underwear |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 676 Reviews |
| Fabric Type | 92% ultra-soft polyester 8% spandex |
| Fabric type | 92% ultra-soft polyester 8% spandex |
| Fit Type | Regular |
| Item Type Name | Base Layer |
| Manufacturer | China |
| Manufacturer Part Number | HEROBIKER |
| Material Type | Polyester |
| Neck Style | Crew Neck |
| Occasion Type | Formal |
| Origin | Imported |
| Package Quantity | 1 |
| Pattern | Solid |
| Product Care Instructions | Machine Wash |
| Size | X-Large |
| Sleeve Type | Long Sleeve |
| Style Name | Classic |
| Style Number | HEROBIKER |
| UPC | 792966157538 |
| Unit Count | 1 Count |

## Images

![Thermal Underwear Boys Ultra Soft Fleece Lined Kids Thermals Long Johns Top Bottom Warm Set for Winter Skiing - Image 1](https://m.media-amazon.com/images/I/61ksce5mUkL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: I saw a review that stated these are not fleece lined but product description shows it.. can anyone confirm the fleece lining in this product?**
A: The ones I recieved have a very thin fleece lining it's not what you imagine when you hear fleece. But I have several different brands that are fleece lined and they all are made the same. They are made to go under clothing and not be bulky.

**Q: Can the small size fit 2 year old**
A: Too big for a two year old.

**Q: Where can I find sizing chart? What are the ages/measurements of the garments?**
A: At the bottom/ small, medium, large

**Q: How do you tell what the size range is for small?**
A: By sizing my son to my grand son they are one size off from each other

## Customer Reviews

### ⭐⭐⭐⭐⭐ A must have
*by U***E on January 28, 2026*

My son hasn't taking these off since the snow hit! He loves the comfort and warmth.

### ⭐⭐⭐⭐⭐ My little one didn't want to take them off!
*by E***R on January 24, 2023*

I would give 10 stars if I could! I will be ordering more for my little guy. It was a struggle to get him to even let me wash them. He has issues with textures but these were perfect for him in every way. I ordered them for a trip to the mountains, thankfully they arrived 5 mins before we left (my fault for last min ordering). They are not thick and have a thin lining of fleece but they are smooth, soft and kept him very warm and comfortable on our hikes in the cold mountains. He wore them the entire trip barely letting me wash them. They wash well, no shrinking nor fading of the vibrant blue. This is definitely worth every penny. Thank you from me and my little one!

### ⭐⭐⭐⭐⭐ Perfect for below zero weather
*by G***7 on January 15, 2024*

I got two pairs of thermals for my middle schooler who is on the spectrum and is very picky with what they wear. They absolutely LOVED these thermals and didn’t want to take them off! They fit snug without being constricting and the flat seams do not irritate their skin. My kid is 5’ tall at age eleven and the size Large was perfect. They said they were warm and dry all day even when playing outside in the snow. I will be purchasing another set because the quality is fantastic. Honestly you can’t have enough for your kids especially if they are active.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-10*