B121: Thermal trousers (B121)

Technical Specification

• Material: 50% Polyester, 50% Cotton
• Weight: 200gsm
• Fit: Cuffed Hem, Elasticated Waist
• Certifications: Reach, Sedex

Engineered for Performance

The Portwest B121 Thermal Trousers are a foundational element of any cold-weather industrial uniform, specifically engineered to provide a critical layer of insulation for outdoor and warehouse operatives. Manufactured from a robust 200gsm poly-cotton blend, the fabric knitting structure is designed to trap pockets of air close to the skin, creating a thermal barrier that significantly reduces heat loss in sub-zero or refrigerated environments. The 50% polyester content ensures durability and moisture management, wicking sweat away from the body to prevent the cooling effects of damp fabric, while the 50% cotton component provides a soft, natural feel against the skin to minimize irritation during long periods of wear. This balance makes them ideal for the construction, logistics, and automotive sectors where temperature regulation is paramount for worker safety and productivity. By integrating these baselayers into your workforce's attire, you ensure compliance with duty-of-care standards regarding thermal comfort.

Comfort & Workforce Utility

Operational efficiency is heavily reliant on workforce comfort, and the B121 is designed with movement in mind. The trousers feature a fully elasticated waistband that provides a secure, flexible fit that accommodates various body shapes without restricting bending, climbing, or lifting motions. Crucially, the ankles are finished with a cuffed hem. This technical detail is essential for staff wearing safety boots or heavy workwear trousers on top; the cuff prevents the baselayer from riding up the leg, ensuring continuous thermal coverage from waist to ankle throughout the shift. The fabric is lightweight enough to be worn unobtrusively under overalls, jeans, or hi-vis trousers, acting as a 'second skin' that does not add bulk or impede agility. The construction is robust enough to withstand regular industrial laundering, maintaining its shape and thermal properties over time, making it a high-ROI addition to any uniform inventory.

Ideal Workplace Applications

• Cold Store & Refrigerated Warehousing
• Winter Construction & Roadworks
• Offshore & Marine Operations

Garment Utility & Care

As a dedicated undergarment, the B121 is primarily supplied unbranded to maximize comfort and reduce friction points against the skin. It is a high-value essential for bulk uniform provisioning. We recommend you layer under Trousers or coveralls for maximum thermal efficiency.