With this wonderful woolen four-season duvet from Prolana, you'll sleep like a baby all year round! The cover is made of fine percale cotton (kbA) and the duvet is filled with organic sheep's wool (kbT). Thanks to the breathable and temperature-regulating properties of wool, you won't easily be too hot or too cold. The naturally present wool fat in the duvet has a self-cleaning effect, so just air it out and your duvet is ready to use again!