· Flame retardant long underwear in high quality merino wool. · Best quality in terms of material and workmanship guarantee all the requirements of a good underwear. · As well as the ergonomic fit and the protective properties, this underwear has the wool?s capacity to hold in warmth in both wet and dry conditions. · It is ideal for both indoor and outdoor environments. · Wash in a 60ºC delicate wash. · Certified to EN 1149-5 EN ISO 11612 A1, B1, C1 and IEC 61482-2, Class 1. · EBT 7,3 cal/cm², HAF: 78,6%