Sauna pillows are made of certified cotton. The white, inner cover with sawn in zipper allows easy filling exchange and cover washing. Visible on the picture are drawstrings used for an easy outer cover removal. Pine tree shavings sauna pillows - very light and soft pillow of an amazing fragrance. It hardly warms up in sauna. Due to the savings softness it does not massage the neck . Find out more about pine tree flakes properties HERE. The diameter of the bolster, depending on the filling, is about 20 cm.