(1) the general pillow filled with buckwheat bark, the best filler is millet bran, do not use sponge. (2) should be used to pillow the lower part of the head and neck cushion solid. (3) Generally speaking, the height of the pillow is 10 to 15 cm. Filling degree has a simple way to test: the pillow on the table, and then squeeze down hard with your hand, the pillow height under your hand can gradually fall to the original height of 1/2 that is just right; if after squeezing down, the height of the pillow under the hand down to almost close to the desktop, indicating that the filler is loaded too little, too loose; if almost can not be pressed down is too much filler, too full. (4) sleeping pillow suitable or not to wake up in the morning, feel light and comfortable with the neck activities.