The new OTSO SPORT Merino Wool socks are made of Merino wool from New Zealand.It is natural, recyclable and biodegradable.providing a constant sensation of softness and well-being.It is thermo adjustable, breathable and resistant to the passage of time and stains.In addition, it repels water and eliminates humidity, sweat and bad odours.managing to preserve the original colors even if they are washed in the washing machine, and without losing any of their properties.They are ideal for hiking and long trekking days, but also for running, trail running, cycling or skimo.In short, they are a good ally in any outdoor sport during all seasons of the year.