HELLY HANSEN WARM FREEZE ½ ZIP £65

Helly Hansen is best known for its iconic polypropylene layers that rapidly move sweat away from the body. But the brand also makes products, like this one, with added merino wool for extra warmth. With a zip for ventilation, this bi-component garment is ideal for cooler conditions, such as glacier travel or alpine mountaineering, when you need maximum sweat control but also a little extra warmth. The stretchy fit is closer than standard base layers but not restrictive and the material doesn't appear to pill (bobble) easily, which is important for use under rucksack straps. Not the softest layer, but ideal for colder weather.

VITAL STATS Material merino wool (57%); polypropylene (43%) Weight 286g (size men’s L) Sizes XS-XXL (men’s); XS-XL (women’s) www.hellyhansen.com