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Sub Zero Factor 1 Thermal Base Layers are one of the most technical range of lightweight active outdoor underwear available. These thermal base layers are manufactured from a lightweight rib 100% Polyamide tubular fabric designed to be worn next to the body. Each fibre is impregnated with a hydrophilic finish that transports moisture away from the skin and disperses it over a large area of the outer layer of the fabric so it can easily evaporate. This provides a warm dry micro-climate next to the skin that gives you greater performance and activity longevity.

An ideal thermal base layer system for cycling, walking, hiking, mountaineering, skiing, running, canoeing, sailing, golf and climbing.

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