Thermal Long Johns – Base Layer Warmth for Cold Weather Work

Stay warm and comfortable on the job with our range of thermal long johns – essential base layers for working outdoors or in cold, unheated environments. Designed to trap body heat and wick away moisture, thermal bottoms provide reliable insulation during the colder months.

Perfect for builders, groundworkers, warehouse staff, and anyone exposed to freezing conditions, our men’s thermal long johns are made from soft-touch, breathable fabrics that sit comfortably under your work trousers without restricting movement.

Choose from lightweight base layers to heavyweight thermals, including styles from trusted brands like Portwest, Snickers Workwear, Helly Hansen, and Beeswift. Available in multiple sizes and materials, including polyester blends, cotton thermals, and moisture-wicking performance fabrics.

Why Choose Our Thermal Long Johns?

• ✔️ Warm & Insulating – Retains body heat in cold, damp conditions

• ✔️ Breathable & Moisture-Wicking – Helps prevent overheating and sweat build-up

• ✔️ Stretch Comfort Fit – Sits easily under any work trousers

• ✔️ Durable for Daily Use – Machine washable and long-lasting

• ✔️ Ideal for Outdoor Trades & Winter Work – From construction to delivery work

Whether you're working through frosty mornings, standing still in cold warehouses, or spending long shifts outdoors, our thermal long johns keep you warm where it matters most.

Shop now for high-performance thermal base layers with fast UK delivery and sizes to suit all trades.