This men's thermal top is a close-fitting base layer with a mock neck, made to sit under a jumper, shirt or jacket without adding bulk. The brushed thermal fabric holds warmth, so you can wear less on top and still stay comfortable.

The cut is fitted with a bit of stretch, which means no bunching when you pull a jacket over it. The mock neck covers the base of your neck without feeling as heavy as a full roll neck, and ribbed cuffs and hem stop it riding up.

It works on cold mornings under a work shirt, on the touchline at the weekend, or as a simple top on its own with chinos or jeans. Because the finish is plain and dark, it does not show through a knit.

• Mock neck | Keeps your collar area warm without a full roll neck
• Brushed thermal fabric | A soft feel against the skin and good warmth for its thickness
• Stretch cotton knit | Moves with you and holds its shape between washes
• Ribbed cuffs and hem | Stays in place under other layers
• Close, fitted cut | Slim enough to wear under a jumper or jacket

It is cut close to the body. If you want a looser feel, or you are between sizes, go up one.