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Roadbox Men’s Fleece Thermal Underwear Set, Black, Size M

Original price was: £24.99.Current price is: £14.98. (as of 06/11/2026 00:40 GMT - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Roadbox men’s thermal underwear set is a black, size M base layer with fleece lining. It has four-way stretch, moisture-wicking and quick-drying fabric, flatlock seams and a tagless design. Check the available size guidance for fit, consider how it will layer beneath your clothing, and confirm which garments are included in the set. Review the care label before washing.

SKU: B0CBMMWZ9H Category:

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Not sure yet?Men’s Base Layer Sets Buyer GuideRead what to compare before you choose

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Quick Summary

The Roadbox men’s thermal underwear set is a black, size M base layer with a fleece lining. Listed features include four-way stretch, moisture-wicking and quick-drying fabric, flatlock seams and a tagless design.

Key Details

Detail Product information and buyer relevance
Product type Men’s thermal underwear set for wearing as a base layer.
Colour and size Black, size M. Check sizing against the fit you want and the clothing worn over it.
Model 213191-Back-M.
Construction Fleece-lined fabric with four-way stretch.
Design details Moisture-wicking and quick-drying fabric, flatlock seams and a tagless design.

Key Features Explained

The four-way stretch is intended to allow movement in different directions. Flatlock seams are designed to reduce chafing, while the tagless design avoids a sewn-in label. These construction details do not guarantee a particular fit or comfort level.

What to Compare Before Buying

  • Size: This version is size M. Check the available size guidance and compare it with your measurements before choosing.
  • Layering fit: Consider whether you want the set close to the body as a base layer and whether it will sit comfortably beneath your outer clothing.
  • Set contents: Confirm which garments are included in the set before choosing.
  • Care: Check the garment care label before washing, particularly if you have specific laundry requirements.

Who This Product May Suit

The set is presented for use beneath other clothing or on its own, including for commuting, hiking, camping, football and skiing. Consider the conditions and the rest of your clothing when deciding whether this base layer suits your activity.

Before You Decide

Check that you want a men’s base-layer set in black, confirm that size M suits your preferred fit, and verify which garments are included. Review the care instructions before washing.

Brand

Roadbox

Manufacturer

Roadbox

Product Group

Apparel

Part Number

4uSUK213191-Back-M

Model

213191-Back-M

Color

Black

Size

M

Number Of Items

1

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