This is designed to deliver a higher degree of comfort, stability, and freedom of movement with minimal adjustments.Headgear has inlaid adjustable straps that converge into a single back panel with a crown strap for added stability.Freeform spring gives you the ability to move in any direction. The soft silicone spring helps you to get a better night’s sleep by limiting disturbances to the seal.Intuitive forehead pad is designed to enhance its performance