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 doesnt restrict COOLING VENTS: Circulates air flow and lets excess heat out