Base layers are worn next to skin and are designed to be the first item of clothing you put on. Engineered to wick moisture away from your body and stop you feeling cold, thermal base layers come in a variety of weights to suit the demands and conditions of your activity. High quality merino wool base layers from brands like Icebreaker will regulate temperature, are highly durable and are remarkably stink-free due to merino’s antibacterial properties. High quality synthetic baselayers from Mont and Arc’teryx provide a slimmer fit, with a superior warmth-to-weight ratio, and are often treated with antimicrobial fabric treatments for odour resistance.