---
product_id: 155102174
title: "Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set"
brand: "rocky"
price: "$37.42"
currency: USD
in_stock: true
reviews_count: 10
category: "Rocky"
url: https://www.desertcart.us/products/155102174-rocky-thermal-underwear-for-boys-cotton-knit-thermals-kids-base
store_origin: US
region: United States of America
---

# Moisture-wicking polyester microfibers Superior warmth for cold climates 55% Cotton & 45% Ultra-Soft Polyester blend Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set

**Brand:** rocky
**Price:** $37.42
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay warm, dry, and unstoppable — the ultimate base layer for boys on the move!

## Quick Answers

- **What is this?** Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set by rocky
- **How much does it cost?** $37.42 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/155102174-rocky-thermal-underwear-for-boys-cotton-knit-thermals-kids-base)

## Best For

- rocky enthusiasts

## Why This Product

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

## Key Features

- • **Stretch & Flex Fit:** Elastic knit design moves with every adventure or bedtime stretch
- • **Durable & Easy Care:** Retains softness and color wash after wash, built for busy kids
- • **All-Day Cozy Comfort:** Soft cotton-polyester blend keeps boys warm without bulk
- • **Versatile Base Layer:** Perfect under casual, formal, or pajama wear for year-round use
- • **Active Moisture Management:** Advanced wicking fabric keeps skin dry during play or sleep

## Overview

Rocky Thermal Underwear for Boys is a premium 2-piece base layer set crafted from a 55% cotton and 45% ultra-soft polyester blend. Designed for superior warmth and moisture-wicking performance, this stretchy, breathable thermal set is ideal for layering under casual or formal wear, or as cozy pajamas. Engineered to keep active kids dry and comfortable in cold weather, it combines durability with softness that improves after washing, making it a smart, stylish choice for winter-ready boys.

## Description

At Rocky, our goal is simple: to bring fashion and comfort within everyone's reach. We believe that you should look and feel amazing every single day. We're on a mission to make our quality, durable clothing affordable for all. Every piece is crafted with your ultimate comfort in mind. We’ve got you covered whether you’re relaxing at home, in the gym, or on the go. Discover the Rocky difference. You deserve the best! At Rocky, our goal is simple: to bring fashion and comfort within everyone's reach. We believe that you should look and feel amazing every single day. We're on a mission to make our quality, durable clothing affordable for all. Every piece is crafted with your ultimate comfort in mind. We’ve got you covered whether you’re relaxing at home, in the gym, or on the go. Discover the Rocky difference. You deserve the best! Thermal Sets Visit the Store Thermal Sets Visit the Store Kids Thermal Sets Visit the Store Kids Thermal Sets Thermal Pet Collection Visit the Store Thermal Pet Collection Mock neck - Long Neck Mens Boxers Collection Visit the Store Mens Boxers Collection Kids Onesie Collection Visit the Store Kids Onesie Collection Men's Socks Visit the Store Men's Socks Women's Socks Visit the Store Women's Socks Thermal Tops & Bottoms Visit the Store Thermal Tops & Bottoms Kids Thermal Tops & Bottoms Visit the Store Kids Thermal Tops & Bottoms Thermal Christmas Collection Visit the Store Thermal Christmas Collection Kids Christmas Collection Visit the Store Kids Christmas Collection Jumpsuits Christmas Collection Rocky Leggings Collection Visit the Store Rocky Leggings Collection

Review: Great price, great set! - This set was perfect for our son's costume this year. After reading some reviews, I ordered a size up (Medium) for our boy who normally wears a Small 5/6T. I wanted it a little lose not snug fit. It fits nicely in the waist and length on our tall ,lean boy. The material is good quality, color was bright and item just as described. Our son said is soft and comfy. Material is even softer after washing. Would definitely recommend for warm under clothing wear or pajamas!
Review: Good buy - I bought for pyjamas. I have a very slender 11-y/o grandson. Bottoms are a little loose, but are fine for sleeping. My 9-y/o grandson is more average in weight. Fits good. They both are a little tall. I ordered large for both. Very soft and warm. Well made. Good price.

## Features

- 2 PIECE SET: This Rocky cotton knit thermal underwear for boys set is designed for comfort with Polyester wicking microfibers. These boy's thermal underwear are stretchy comfortable.
- WONDERFULLY WARM: Rocky's thermal underwear for boys is perfect for use underneath formal or casual attire at work or for a day out, or the thermal underwear can be worn as comfy pajamas on cold, chilly nights.
- PREMIUM GRADE FABRICS: Rocky thermal underwear for boy's is made from 55% Cotton and 45% Ultra-Soft Polyester, these thermal long johns have the perfect blend of comfort, warmth, elasticity, and moisture protection.
- MOISTURE WICKING: Designed to keep you dry, this long-sleeved shirt and long pants are made to be wick away sweat and other moisture, this thermal underwear for boys set will do its job no matter how active you are.
- BASE LAYERS: When going out to jog, run, bike or cycle in the cold, make sure to use the rocky thermal underwear for kids set under your clothing to keep warm and cozy in freezing cold climates or bad weather. These thermal underwear are stretchy & comfortable.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CTZV73Y |
| Age Range Description | Kid |
| Apparel Closure Type | Pull On |
| Best Sellers Rank | #466,374 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #592 in Boys' Pajama Sets |
| Brand Name | Rocky |
| Collection Name | Winter |
| Color | Teal |
| Customer Reviews | 4.4 out of 5 stars 1,449 Reviews |
| Fabric Type | 55% Cotton and 45% Ultra-Soft Polyester |
| Fabric type | 55% Cotton and 45% Ultra-Soft Polyester |
| Material Type | Polycotton |
| Neck Style | Crew Neck |
| Pattern | Solid |
| Size | XX-Small |
| Sleeve Type | Long Sleeve |
| UPC | 810829030498 |

## Images

![Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set - Image 1](https://m.media-amazon.com/images/I/71tUMCI6T6L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great price, great set!
*by Q***S on October 28, 2020*

This set was perfect for our son's costume this year. After reading some reviews, I ordered a size up (Medium) for our boy who normally wears a Small 5/6T. I wanted it a little lose not snug fit. It fits nicely in the waist and length on our tall ,lean boy. The material is good quality, color was bright and item just as described. Our son said is soft and comfy. Material is even softer after washing. Would definitely recommend for warm under clothing wear or pajamas!

### ⭐⭐⭐⭐⭐ Good buy
*by D***D on October 3, 2020*

I bought for pyjamas. I have a very slender 11-y/o grandson. Bottoms are a little loose, but are fine for sleeping. My 9-y/o grandson is more average in weight. Fits good. They both are a little tall. I ordered large for both. Very soft and warm. Well made. Good price.

### ⭐⭐⭐⭐⭐ Great boy’s Thermal Set!
*by F***F on November 10, 2020*

I purchased it for My 9 year old grandson, I got size large, it’s just a bit big in the waist, and the bottom is a bit long, but I expected that, he will grow into it. The medium would have been too small. He loves it. Good quality and nice feel against the skin. The waist band is not rough. I got two! Good stuff.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-08*