The pillow according to the present invention is positioned side by side in the left-right direction and is coupled to the first unit main body and the second unit main body such that the distance between them is variable, and the pillow is relatively moved in the front-rear direction by the first unit main body. And the third unit body is coupled to the second unit body so as to be relatively moved in the front-rear direction, and is arranged side by side in the left-right direction on the third unit body so that the distance between them is variable. A fourth unit body coupled to the first unit body and the first unit body adjusting the third unit body and the fourth unit body to be farther or closer to each other in the front-rear direction with respect to the first unit body and the second unit body. A unit, and a second spacing adjustment unit that causes the first unit body and the third unit body to be farther or closer to each other in the left-right direction than the second unit body and the fourth unit body.本記載の枕は左右方向に並んで位置されて互いの間隔が可変されるように結合された第１単位本体及び第２単位本体と、前記第１単位本体に前後方向に相対移動されるように結合された第３単位本体と、前記第２単位本体に前後方向に相対移動されるように結合され、前記第３単位本体に左右方向に並んで位置されて互いの間隔が可変されるように結合された第４単位本体と、前記第３単位本体及び第４単位本体が前記第１単位本体及び第２単位本体に対して前後方向に互いに遠くなるか近くなるようにする第１間隔調節ユニットと、前記第１単位本体及び第３単位本体が前記第２単位本体及び第４単位本体に対して左右方向に互いに遠くなるか近くなるようにする第２間隔調節ユニットとを含む。
