This two-piece first layer undergarment is arguably the best-selling and most recognisable underwear on the angling market. Made from a technically advanced micro-fibre, its thermal properties work by trapping warm air next to the skin.
The breathable garment wicks away sweat quickly, maintaining body heat. Having owned two sets of Sleep Skins, I can confirm that they wear well, and are brilliant for match fishing, keeping you snug as a bug even during a freeze. However, on a long kit-carrying walk you’ll heat up really quickly, so do bear that in mind.