The women s trekmaster socks from berghaus are classic trekking socks that have been designed for colder conditions making them perfect for walking on the hills all day these trekmaster socks are made with a mixture of nylon in high abrasive areas to offer extra durability and merino wool for enhanced warmth they also have dual therm fibres that offers extra warmth when you feel cold and keep you cooler when you re hot the tremasters feature high density padding in key areas to provide underfoot