This Versatile Pillow Offers Choice Of Four Ergonomic Sleeping Options To Provide The Most Comfortable And Supportive Fit Pleated Side Offers Greater Contoured Support With A High And Low End Providing Two Options For A Comfortable And Supportive Fit Peaked Side Offers A Flatter Surface Providing A Choice Of Two Higher/firmer Sleeping Heights Optimal Air Flow - Both Pleated And Peaked Surface Textures Promote Air Circulation Reduce Build-up Of Moisture And Help To Reduce Pressure Points Includes A Machine-washable Pillow Protector Firm Support