Thermal Work Trousers

When the temperature drops, you need gear that keeps the cold out and the warmth in. Our range of thermal work trousers at AlexDirect is designed for professionals who work in challenging conditions — from frosty mornings on-site to draught…

When the temperature drops, you need gear that keeps the cold out and the warmth in. Our range of thermal work trousers at AlexDirect is designed for professionals who work in challenging conditions — from frosty mornings on-site to draughty warehouses. Whether you’re after insulated trousers, fleece-lined options, or thermal base layers, we’ve got everything you need to stay warm, comfortable, and focused on the job.

Thermal Lined Site Trousers:

Our thermal lined site trousers are built for cold-weather performance on demanding job sites. With insulation that traps heat and outer materials designed to take a beating, these trousers offer reliable winter protection without restricting your movement. Ideal for trades working outdoors in harsh winter conditions.

Fleece Lined Work Trousers:

Tackle tough shifts in the cold with our fleece lined work trousers. Combining warmth and durability, these trousers keep you insulated while maintaining flexibility. Perfect for loading bays, early starts, or outdoor labour — fleece-lined workwear helps you stay focused when the chill sets in.

Thermal Long Johns for Work:

Add an essential layer with our thermal long johns for work. The Regatta Long Johns offer a comfortable, close fit that traps heat and wicks away moisture, making them ideal for layering under trousers in winter. For premium performance and active warmth, the Helly Hansen Lifa Pant delivers lightweight insulation and superior breathability — perfect for high-intensity site work.

Base Layer Thermals for Work:

Our base layer thermals for work provide that crucial first layer of warmth during winter shifts. Pair your long johns with the Regatta Short Sleeve Thermal Top — a lightweight, thermal layer that keeps your core warm while allowing full freedom of movement under heavier outerwear.

About AlexDirect
AlexDirect is the UK’s trusted source for trade workwear, PPE, and winter-ready gear. Whether you're working in construction, logistics, or maintenance, we provide warm, durable, and high-performance clothing for professionals who don’t stop when the temperature drops. Enjoy free delivery over £50, free returns, and fast UK dispatch with every order.

Frequently Asked Questions

Thermal work trousers are designed to keep you warm in cold working conditions. Whether you're on an outdoor site, in a chilly warehouse, or working early mornings, these trousers provide insulation while still offering flexibility and durability.

Absolutely. Thermal lined site trousers are perfect for cold weather site work. They combine tough outer fabrics with insulated linings, giving you warmth, protection, and comfort without sacrificing performance or mobility on the job.

Fleece lined work trousers offer soft, all-day warmth in cold or damp conditions. The fleece interior adds comfort without bulk, making them ideal for tradespeople, landscapers, and anyone working outdoors through autumn and winter.

Yes – thermal long johns for work are a great base layer option when you want to stay warm but continue wearing your standard work trousers. They’re lightweight, breathable, and fit snugly under your main layer to trap heat without restricting movement.

Base layer thermals for work help regulate body temperature by keeping warmth in and moisture out. They’re especially useful for freezing or wet conditions, acting as a breathable first layer that keeps you dry, comfortable, and insulated throughout your shift.