Cov koob no muaj kev cob qhia kev cob qhia, kev tawm dag zog rau cov leeg nraub qaum, siv cov ntaub qhwv ntsej muag uas tsis yog tsim kua muag, yuav tsis hnav vim siv ntau zaus, lub ntsej muag ci dub acrylic ua rau cov cuab yeej zoo tshaj plaws Cov khoom siv ntau yam, kev cai- tsim Lat Tshuab yog qhov zoo tagnrho rau kev ua haujlwm ntawm cov ceg tawv thiab cov leeg latissimus dorsi nyob rau hauv txoj kev nyab xeeb, ua haujlwm tau zoo los ntawm qhov chaw zaum.