A posture loop includes an elastic band or cable having two end portions, a retainer bridge having a bar, the elastic cable includes an intermediate portion engaged with one end portion of the bar, and the end portions of the elastic cable are engaged with the other end portion of the bar, and two buckle members are attached to the end portions of the elastic cable for adjustably coupling the end portions of the elastic cable to the other end portion of the bar and for forming an eight (8)-shaped structure for the posture loop and for engaging onto shoulder portions of a user, The buckle members each include two grooves formed by a rib for engaging with the end portions of the elastic cable respectively.本創作係在於提供一種肩部或背部的復健或鍛鍊或美化的運動器具或美姿環或姿態環,其包括一彈性帶其具有兩個端部,一橋接件其具有一柱體,其柱體包含有一第一端部供彈性帶的中段部位穿設,彈性帶的兩個端部更分別穿設有兩調節環,而後穿設至柱體的第二端部,用以調整彈性帶的長度,進而可以連結成一概呈8字形的結構,以供使用者穿戴至其背部或肩部上,而可供用來矯正或訓練使用者的肩部或背部者。(10)‧‧‧彈性帶(11)‧‧‧彈性帶的第一端部(12)‧‧‧彈性帶的第二端部(13)‧‧‧彈性帶的中段部位(14,15)‧‧‧彈性帶的兩區段(3)‧‧‧橋接件(30)‧‧‧柱體(31)‧‧‧溝槽(32)‧‧‧柱體的第一端部(33)‧‧‧柱體的第二端部(40)‧‧‧調節環(8)‧‧‧使用者(80)‧‧‧使用者肩部(81)‧‧‧使用者背部