Where first class comfort meets customizable support. The first pillow that adjusts to you, with three ways to adjust the Evolution X provides you with the opportunity to customize the height, circumference, and closure to your preferred fit. X-perience the difference when comfort and support perfectly intersect to provide an extraordinary travel experience. · CHANGE THE CIRCUMFERENCE OF THE PILLOW TO FIT YOU: One-time adjustment: Unzip the back zipper to release and secure the strap to adjust the circumference of the pillow to your preferred fit CUSTOMIZE PILLOW TO YOUR EXACT NECK HEIGHT: It is the ONLY pillow that fits to you rather than you having to fit it. Shift top or bottom pillow lobes to dynamically adjust to your preferred height · FINE TUNE FOR PERFECT CUSTOMIZED SUPPORT: Pull the cord and ball lock through the closure ring, then press the button and slide to adjust · CRADLED HEAD SUPPORT: Cradles your head and prevents it from falling forward. This keeps your head up and out of neck pain. ERGONOMIC SUPPORTIVE DESIGN: Engineered for optimal neck and spine alignment, the Evolution X provides comfort, support, and relief that doesn’t restrict · COOLING VENTS: Circulates air flow and lets excess heat out