It is all about Balance, Our Balance Collection Performance Pillow features silk feel fibers that provide soft, dynamic support. Patented air flow technology and moisture wicking fabric allows you to keep cool and dry throughout the night, ensuring a deep, restorative sleep. Four different pillow heights cater to all different types of sleepers including a side sleeper, back sleeper, stomach sleeper, and a multi position sleeper. This series also features a removable, washable cover for easy care and cleaning.