This product is designed by Japanese professionals and medical institutions to enhance the thickness of the pillow in order to fit the neck and shoulders of men. It can not only improve the problems of stiff neck and snoring, but can be used for daily care after surgery. The enlarging and thickening U-shaped design gives the effect of pressure relief and relaxation. It can accelerate the smooth flow of blood and speed up recovery from cervical vertebrae problems. Using the pillow daily, your cervical vertebrae is well protected with the correct sleeping position so that you will be full of vitality everyday.