everyday fits
Amazon Essentials Boys' Cotton Blend Thermal Long Underwear Set, Black, Medium
Underwear & Socks Amazon Essentials

Amazon Essentials Boys' Cotton Blend Thermal Long Underwear Set, Black, Medium

This thermal set features a lightweight cotton blend with a waffle knit texture designed for cozy warmth without bulk. The long-sleeve top includes a tag-free crew neckline, while the pants offer a front pouch and double-layer fly for comfort. Ribbed cuffs at the sleeves and leg openings help secure the fit.

Best for: layering under school clothes in cold weather

$13.50
Price as of Sep 15, 2026 8:08 AM UTC

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

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Product details

  • COTTON BLEND THERMAL: Cut from cotton blend that is lightweight and boasts a waffle knit texture that is lofty yet cozy.
  • EVERYDAY ESSENTIALS: Cotton blend thermal underwear set functions as a lightweight base layer to keep you warm.
  • DETAILS: Long sleeve top with tag free crew neckline. Full-length pants feature front pouch and double layer keyhole fly. Ribbed cuffs at sleeves and leg openings.

Specifications

BrandAmazon Essentials
ColorBlack
SizeMedium
Pack size1
ModelP_AE2585_S4
Sold and shipped by Amazon. Pricing, availability, sizes, and returns are handled on Amazon · How this works

Frequently asked questions

What is the fabric composition of this thermal set?
The garment is made from a lightweight cotton blend featuring a waffle knit texture that provides a lofty yet cozy feel. For specific percentages of cotton versus synthetic fibers, please check the product listing on Amazon.
How does the sizing run for this Medium size?
This item is listed specifically as a Medium size within the Boys' Underwear & Socks category. Since exact body measurements are not provided in the specifications, it is recommended to verify the fit against the detailed size chart on Amazon.
What are the key design features of the long underwear set?
The set includes a long-sleeve top with a tag-free crew neckline and full-length pants with a front pouch and double-layer keyhole fly. Both pieces feature ribbed cuffs at the sleeves and leg openings to help secure the fit.
Is this thermal underwear suitable for use as a base layer?
Yes, the cotton blend thermal fabric is designed to function as a lightweight base layer to keep the wearer warm. Its waffle knit texture allows it to serve effectively as everyday essential undergarments.

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