PORTWEST B133 Thermal Baselayer Top

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PORTWEST B133 Thermal Baselayer Top – Long Sleeve Insulating Layer for Cold Weather Work

The PORTWEST B133 Thermal Baselayer Top is a high-performance long sleeve base layer, designed to provide lasting warmth, breathability, and comfort in cold environments. It’s ideal for wearing under jackets, fleeces, or coveralls—keeping you dry, warm, and flexible during long shifts in winter conditions.

With its moisture-wicking fabric, soft-touch interior, and stretch-fit design, the B133 offers full mobility and comfort without adding bulk. Whether you're on-site, in transit, or working outdoors, it's an essential cold-weather layer for professionals.

Key Features:

  • Long sleeve thermal base layer top for cold weather use

  • Moisture-wicking performance keeps skin dry and warm

  • Soft-touch inner finish for next-to-skin comfort

  • Close-fit stretch fabric supports unrestricted movement

  • Low-profile seams to minimise irritation

  • Quick-drying and low maintenance – ideal for daily wear

  • Ideal for layering under outerwear or waterproof clothing


Ideal For:

  • Construction and site work in cold weather

  • Outdoor maintenance, transport, and logistics

  • Cold storage and freezer environments

  • Winter sports, hiking, or outdoor leisure

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