Product of the month

WARM FREEZE HALF-ZIP BASE LAYER HELLY HANSEN, £70 • Men’s and women’s versions

Most base layers are either made of merino wool or synthetic fabrics – and each of these has its pros and cons. The Warm Freeze top aims for the best of both worlds.

It’s made of two fabrics – a merino wool outer, bonded to a synthetic lining. The Lifa fiber next to your skin keeps you comfortable by soaking up moisture, while the wool outer does a fine job of insulating you. Worn beneath a rain jacket and/or midlayer, that makes it well adapted to high-energy, stop-go activities – such as hill walking. Worn on its own, it’s excellent for running or cycling.

A high neck feels snug around the collar when you need it, while the half zip helps you control your temperature when you overheat.

VERDICT An excellent base layer for active days in the outdoors. 4.5/5 www.shop.hellyhansen.com