---
product_id: 775092429
title: "Thermal Underwear For Boys (Thermal Long Johns Set) Shirt & Pants, Base Layer w/Leggings/Bottoms Ski/Extreme Cold (Red Plaid - X-Large)"
brand: "rocky"
price: "$53.13"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/775092429-thermal-underwear-for-boys-thermal-long-johns-set-shirt-pants
store_origin: US
region: United States of America
---

# Thermal Underwear For Boys (Thermal Long Johns Set) Shirt & Pants, Base Layer w/Leggings/Bottoms Ski/Extreme Cold (Red Plaid - X-Large)

**Brand:** rocky
**Price:** $53.13
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Thermal Underwear For Boys (Thermal Long Johns Set) Shirt & Pants, Base Layer w/Leggings/Bottoms Ski/Extreme Cold (Red Plaid - X-Large) by rocky
- **How much does it cost?** $53.13 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/775092429-thermal-underwear-for-boys-thermal-long-johns-set-shirt-pants)

## Best For

- rocky enthusiasts

## Why This Product

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

## Description

Cold weather is fun in these Rocky Thermal Undies. Keeping warm changes everything. Perfect as extra-light gear for a ski trip or snow day, this thermal 2 piece set is high quality underwear for anything from sleeping or lounging around to athletic and sport activities. About this Product: 2 piece set: 1 long sleeve top + 1 full length bottom Double layer long knit cuffs.  92% ultra-soft polyester, 8% spandex Elastic waistband Fleece lined moisture wicking  Full cut comfortable fit Ultra Soft Warmth Shrinkage controlled for lasting size and shape Thermal knit retains body heat to keep your child warm and comfy. Measurements:  Size XS - 4/5 32-41lbs 22 in waist Size Small- 6/6x 42-59 lbs 23 in waist  Size Medium- 7/8 60-73lbs 24 in waist  Size Large- 10/12 74-95 lbs 25-26 in waist  Size XLarge 14/16- 96-119 lbs 27-28 in waist Winters can get rough and cold. These thermal long johns will help your little boy make it through. They are silky on the outside but lined with soft thermal fleece on the inside. They fit snug enough that there is no bulkiness showing when worn under clothes.They are also wonderful to sleep in. These sets will continue warming you even after being laundered many times. These Rocky Fleece Lined Thermals are well designed for wear under your clothes OR alone.The waist of the pants are elastic for a comfortable snug fit. These light-weight thermal pants make all the difference in the world.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09BY4QTXD |
| Age Range Description | Little Kid |
| Apparel Closure Type | Pull On |
| Apparel Fabric Stretch | Medium Stretch |
| Apparel Fabric Weight Class | Medium Weight |
| Best Sellers Rank | #43,190 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1 in Boys' Thermal Underwear Sets |
| Brand Name | Rocky |
| Care instructions | Machine Wash |
| Collection Name | Rocky |
| Color | Red Plaid |
| Customer Reviews | 4.5 out of 5 stars 5,735 Reviews |
| Fabric Type | 90% Polyester, 10% Spandex |
| Fabric type | 90% Polyester, 10% Spandex |
| Fit Type | Regular |
| Garment Size Country | United States |
| Global Trade Identification Number | 00810065352927 |
| Manufacturer Part Number | 85-PLAID R-XL |
| Material Type | Polyester Blend |
| Neck Style | Crew Neck |
| Number of Items | 2 |
| Occasion Type | Everyday |
| Origin | Made in the USA and Imported |
| Pattern | Plaid |
| Product Care Instructions | Machine Wash |
| Size | X-Large |
| Sleeve Length Description | Long Sleeve |
| Sleeve Type | Long Sleeve |
| Style Name | Snug |
| Style Number | 85-PLAID R-XL |
| Unit Count | 2 Count |

## Images

![Thermal Underwear For Boys (Thermal Long Johns Set) Shirt & Pants, Base Layer w/Leggings/Bottoms Ski/Extreme Cold (Red Plaid - X-Large) - Image 1](https://m.media-amazon.com/images/I/61xAk4maaFL.jpg)

## Available Options

This product comes in different **Colour Name, Size Name** options.

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**Shop now:** [https://www.desertcart.us/products/775092429-thermal-underwear-for-boys-thermal-long-johns-set-shirt-pants](https://www.desertcart.us/products/775092429-thermal-underwear-for-boys-thermal-long-johns-set-shirt-pants)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-14*