If you “sleep hot”, you’ll appreciate how this pillow’s organic wool fill helps stabilize your temperature. Wool fiber is a natural insulator (from heat or cold) and improves air flow. Wool also promotes moisture evaporation for drier comfort. Like Savvy Rest’s shredded latex and wool-latex pillows, these pillows are customizable. Simply unzip the inner and outer casings to remove any amount of wool you’d like.