UnderArmour HeatGear® Armour base layer
Industry leaders in the heat tech market, Under Armour know a thing or two about keeping you warm outdoors. HeatGear® fabric provides all the benefits of compression wear in this long sleeve Armour t-shirt, while still being comfortable enough to wear for longer sessions with 4-way stretch fabric.
Asics Elite base layer
Stay toasty warm in colder temperatures in this comfy Asics Elite Base Layer which uses smart Motion Therm Technology. Wear this under layers or on its own, and stay comfortable with flat-lock seams and spacious raglan sleeves.
Iffley Road Dartmoor base layer
Iffley Road offer classic menswear sport style and fuss-free functionality with this Dartmoor base layer. Made from 100 per cent merino wool, it will keep you warm, it's super soft to the touch and it comes in a selection of colours.
adidas Alphaskin 360 base layer
The Alphaskin 360 is a breathable base layer, ready to warm you up and cool you down depending on your workout. The sleek, streamlined design and Climachill fabric will keep your focused on your running and not what you're wearing.
Odlo Evolution Light base layer
The evolution light base layer provides warmth without additional bulk. With integrated ventilation zones and body temperature control, Odlo have created a staple piece of kit that will keep you running happy from winter through to spring.
Under Armour CG Reactor base layer
The Under Armour CG Reactor is a very clever piece of kit, created to adapt to the intensity of your activity and provide the right level of breathability and warmth. As you run, brushed 'nodes' that sit next to your skin ensure the right level of temperature while mesh side panels provide ventilation. You can now preorder your CG Reactor on the Sweatshop website.
dhb merino base layer
If you're looking for insulation that won't weigh you down, dhb's merino baselayer is a great choice. Whether you opt for multiple layers or just the one, dhb's use of natural materials will keep you warm in all conditions.
Take a look at our top tips for running in the cold and bound your way through winter!