Product Description Positioning device that provides maximum comfort during abdominal position Creates all common flat surfaces with premium therapy tables No need for traditional pillows for massage, acupuncture or treatment for neck, shoulders and back areas Empty in the middle to allow space in stomach conditions. You can also put your arms into the lower space when you take a nap, so you can rest assured that your arms will not be squeezed numbness and will definitely enhance your nap comfort. Adopts an ergonomic curved cervical support design, which disperses the pressure of the hands, elbows and head, protecting the cervical vertebrae, and also helps to relieve stress. The gentle inclination of this pillow is more comfortable for anyone who needs to relax their face down or relieve medical conditions. Specifications: Size: 15.7 x 11.8 x 2.0 inches (40 x 30 x 5 cm) Memory Foam Material Package: 1 x Hidden Pillow