Base layers are next to skin clothing, designed to be the first item of clothing you put on, and the last item you take off. Engineered to move moisture away from your body, thermal baselayers come in a variety of weights to suit your insulation needs. High quality base layers such as Icebreaker Merino wool base layers regulate temperature, are highly durable and remarkably stink-free due to Merino’s antibacterial properties. High quality synthetic baselayers from Mont and Arc’teryx provide a slimmer fit, with superior warmth to weight ratio which can be treated with antimicrobial fabric treatments for smell resistance. A more cost effective option, synthetic layers are fast drying, moisture wicking and extremely durable, though can be more susceptible to smelling compared to merino wool.