Sleep and Beyond pillows provide relief from MCS (multiple chemical sensitivities) as they are free of carcinogenic chemicals. They are perfect for all-year round comfort since they breathe more naturally than down and synthetic products and regulate body temperature by ensuring the body gets to a comfortable sleeping temperature more quickly and stays there for longer. This will allow you to increase the duration of the most beneficial phase of sleep known as REM (rapid eye movement). They last for decades when properly cared for as wool out-performs other fibers used for bedding. All products have been scientifically tested and proven to slow your pulse rate which is a sign of deeper relaxation. They help eliminate excess moisture buildup throughout the night. Less time is spent tossing and turning.