The 50/50 mix used in ths Super.natural top combines the best characteristics of Merino wool and polyester. The wool evens out fluctuations in temperature, feels warm even when stopping for a break, and reduces odour formation and need for washing. The polyester, again, makes for faster drying times and enhances breathability. The fabric is highly pleasant on your skin, and the top is just as at home worn by itself as it is under a shell jacket. - 50% soft Merino wool - 50% polyester - Machine wash at 40ºC