How does New Zealand Merino wool work to keep the temperature constant?
New Zealand Merino wool fibres have a complex structure with a water holding (hydrophilic) interior, known as the cortex and the water-repelling (hydrophobic) exterior known as the cuticle. New Zealand Merino wool fibres will absorb moisture vapour from the high humidity microclimate between the skin and the sock, and release the moisture to an area of lower humidity. As a result, the wearer feels less damp and stays comfortable for a longer period of time. This is of particular relevance to people with diabetes, as they require a sock that can warm the foot and maintain a stable temperature for long periods of the day and retain moisture to keep the skin well hydrated. The New Zealand Merino wool fibre ensures thermostatic regulation by absorption and re-absorption of moisture away from the skin, insulating and regulating the skin surface temperature better than any other fibre. This naturally occurring thermostatic activity retains its temperature to heat the skin in colder climates
