Merino Long-Sleeved Top, Keela, £54.95, keelaoutdoors.com

This smart-looking top from Scottish brand Keela is made mainly from 200gsm merino wool, giving the garment all the attributes I look for in a high-performance base layer. It breathes easily and wicks moisture away from your body well, it keeps you warm when it’s cold outside, cools you down when it’s warm and stays free of body odour. Keela employs a merino mix that promises durability as well as comfort and performance. The design qualities make this top excellent value for its price tag, from the flat-lock stitching and the stylish slim fit, high neck and quarter-length zip for ventilation. All that’s missing is thumb hooks. VERDICT 8/10