The temperature is slightly below zero, the sun is shining, simply ideal conditions to run up Smrk. This is exactly when you want to wear the headband. The excessive heat goes away while the ears are covered. We only use merino wool and alpaca-sheep wool blend for this headband, as these fine and soft materials are most suitable for this purpose. For lining we use TermoRib Ag containing silver threads giving the material hypoallergenic and antibacterial features.