To provide a harness that fits gently on an animals body and which, even with slight changes in an individuals physique, can maintain a favorable fit through fine adjustments. SOLUTION: The harness 1 comprises a body-wrapping element 2 for wrapping an animals body, with an air pad 3 interposed between the outer material and the lining thereof. The air pad 3 is an airtight, flat, hollow bag, with a manually-operated air pump 4 mounted on a portion thereof. Air is injected into the air pad 3 by operating the air pump 4. In this way, the body-wrapping element 2 is inflated or deflated to freely adjust the adhesion of the body-wrapping element 2 to the animals body.挽具(1),是包圍動物的軀體用的軀體包覆體(2)在面料與襯料之間介裝氣墊(3)而構成。氣墊(3)是具有氣密性的偏平的中空的袋體,在其一部分安裝有手動式的空氣泵(4),藉由該空氣泵(4)的操作在氣墊(3)內注入空氣。藉此,軀體包覆體(2)膨脹‧收縮,可自由調整對動物的軀體的軀體包覆體(2)的緊貼性。1‧‧‧挽具25‧‧‧背靠背部28‧‧‧筘裝卸部2‧‧‧軀體包覆體29‧‧‧皺褶部22‧‧‧頸抵接部45‧‧‧空氣放出部421‧‧‧裝飾罩26‧‧‧平面扣具24‧‧‧腿插穿用開口21‧‧‧護胸部3‧‧‧氣墊23‧‧‧腹抵接部27‧‧‧平面扣具