ORTHOPEDIC ”LARGE SIZE NECK REST SUPPORT effectively support your head, neck. This pillow promotes healthy position and maintain your proper posture for car or office chair and will make your driving more comfortable and safer. WHY CHOOSE There is typically a large gap between seat and your head, neck, shoulder which leads to back pain, muscle tension, stress and fatigue. DIFFERENCE BETWEEN SIZE? Size is based on the gap between your neck and your car seat headrest, If the gap is more than 5 inch, choose- L, for less than 4 Inch- M or less than 3/4 Inch- S. IMPORTANT TIPS It is important to note that changing your neck position/posture can cause temporary discomfort. Your muscles, joints, and ligaments may need time to adjust and relax into the new posture. If this is the cause of your discomfort, limit usage to 15 minutes and increase usage time over the course of a few days or a week. Go slow and listen to what your body needs. Some users require few weeks it get used to and feel the benefits. ERGONOMIC DESIGN Maintaining cervical curvature, head and neck and shoulder and fill the gap between the seat. Driving for long time and keep a posture which can easily trigger a variety of cervical problems. LIGHTWEIGHT AND PORTABLE FOR ON-THE-GO COMFORT Simple to use a solution for sitting comfortably and maintaining good posture and it provides all the support.