How does wool work?
Wool’s ability to regulate your body temperature boils down to its capacity to hold and release water. Wool can absorb around a third of its own weight in water before it feels damp. The wool fibres can, when heat is being released, wick away moisture helping to keep you cool (and odour free). The wool fibres also trap warmth, as the heat from the body decreases. This is when wool helps you stay warm.