“This wool pillow protector provides exceptional protection for your pillows. The natural breath ability of the wool helps your pillow feels cool and fresh in the summer, and yet so cozy in the winter.” 100% Terry Cotton cover 100% virgin wool fill Purchased from Fawcett Mattress and found that it makes my pillow a little too lofty for my personal preference (I like a fairly flat pillow). But it sure is cozy! Sells $65 brand new.