Collection: Base Layer Thermal Underwear

Cold weather shouldn't slow you down. Protect yourself from the elements with our fantastic selection of thermal underwear and base layers, and find the perfect gear to keep you warm, dry, and focused on the job.

Easily Beat the Cold

Working outdoors or in cold warehouses can be brutal during the winter months. Our range of thermal clothing from trusted brands like Fort, Caterpillar, and TuffStuff is designed for those who need reliable warmth and comfort while tackling tough jobs.

From long johns that provide extra warmth during extreme weather conditions to versatile long-sleeved tops or short sleeve vests that can be worn alone or layered, we've got what you need to keep the chilly weather at bay.

Our thermal wear comes in a variety of styles and colours to match your workwear, so you won't have to shop around!

What is a Base Layer?

Thermal base layers are your first line of defence against the chilly weather, worn directly against your skin to help regulate body temperature. These garments work by wicking sweat away from your body and trapping body heat. They are essentially known as "heat holders", being that extra layer of warmth that you crave when the temperatures drop.

Winter's harshest conditions are no joke, so thermal underwear is essential for anyone working outdoors. This might include construction workers, farmers, or landscapers, who need to stay warm without compromising mobility. 

You'll be surprised by how much you can get out of a base layer. In addition to keeping you warm in the winter, they help you stay cool in the summer by managing moisture and providing a cooling effect. This adaptability and versatility make them perfect for year-round use in varying work conditions.

Find the Perfect Fit

Choosing the right fit for your thermal underwear is crucial. It should be snug but not restrictive, allowing you a full range of motion for tasks that require bending, lifting, or climbing.

Our products come in various size options to cater to different body types. When measuring for a base layer, ensure it fits close to the skin without being too tight. Use the provided size guides and consider customer reviews to find the best fit.

The quality of thermal underwear lies in its materials. You'll usually have three solid options when choosing a fabric: merino wool for natural insulation, polyester for durability, and synthetic blends for a bit of both. These materials come in different weights to suit varying levels of cold, ensuring your core stays warm throughout the day.

Our mens thermals and womens thermals are crafted from high-quality, breathable, and moisture-wicking fabrics that offer stretch and flexibility. The durability of these materials ensures they withstand the daily wear and tear of tough work environments, all while keeping you toasty and comfortable.

Plus, with flatlock seams, the chafing and irritation that comes with most clothing are a thing of the past, leaving you with maximum comfort.

Tips for Your Thermals

Layering is essential for optimal warmth. Start with a moisture-wicking, lightweight base layer directly against your skin. Add your regular workwear, like a fleece or work shirt, on top to trap heat effectively. Remember all your accessories too, like gloves and hats. Plus thermal socks are usually the trick to keeping your feet comfy when those bitter temperatures hit!

Slip our thermal clothing into your workwear and instantly feel the warmth – no awkward extra layers to get in the way. The moment you put them on, you'll understand why workers swear by them.

Washing is also super simple; follow the care instructions to keep them performing at their best, wash after wash. It's that easy.

Stay Warm, Stay Productive

Browse our collection and experience the comfort and quality that brands like Fort, Caterpillar, and TuffStuff bring to your workday. Shop now to buy the best thermal wear in the UK and tackle any job with confidence and comfort.