A pair of waist attachment member 2 fixed to the waist sides, is constructed from the chest pressing member 3 which is bridged to each waist attachment member, said breast pressing member, provided on both sides of the waist attachment member an arch-shaped arm 4 may be swung pivotally supported on the pivot, and chest pressing body 4a provided in the upper end portion of the arm, provided at an intermediate portion of the arm, for pressing the breast the breast pressing member characterized by comprising a pressing force applying portions 5 and 6 for imparting the pressing force.腰部両側面に固定される一対の腰部取付け部材2と、上記各腰部取付け部材に架設される胸部押圧部材3とから構成され、上記胸部押圧部材は、上記腰部取付け部材の両側面に設けられた枢軸に枢支されて揺動し得るアーチ状のアーム4と、上記アームの上端部に設けられる胸部押圧体4aと、上記アームの中間部に設けられ、上記胸部押圧体を胸部に押圧するための押圧力を付与する押圧力付与部5,6とを備えてなることを特徴とする。
