文胸是女(nv)人的(de)第二(er)層肌膚，其功(gong)能主要(yao)是為了幫助女(nv)性(xing)乳房提供(gong)外(wai)部支撐，避免造成疼(teng)痛(tong)不適，這就(jiu)意味著文胸(xiong)(xiong)(xiong)(xiong)必須(xu)有(you)足夠的(de)舒適性(xing)以(yi)及支撐力。因(yin)此，女性(xing)在選(xuan)購(gou)適合自己(ji)(ji)的(de)文胸(xiong)(xiong)(xiong)(xiong)之前，還需要學會如何量罩(zhao)杯(bei)(bei)，以(yi)及分清(qing)楚胸(xiong)(xiong)(xiong)(xiong)罩(zhao)尺(chi)(chi)(chi)(chi)寸和罩(zhao)杯(bei)(bei)尺(chi)(chi)(chi)(chi)寸的(de)區別。胸(xiong)(xiong)(xiong)(xiong)圍通常是指沿女性(xing)乳頭(tou)繞胸(xiong)(xiong)(xiong)(xiong)一周的(de)長度，而胸(xiong)(xiong)(xiong)(xiong)罩(zhao)尺(chi)(chi)(chi)(chi)寸指的(de)是下(xia)胸(xiong)(xiong)(xiong)(xiong)圍繞一周的(de)尺(chi)(chi)(chi)(chi)寸，罩(zhao)杯(bei)(bei)尺(chi)(chi)(chi)(chi)寸即胸(xiong)(xiong)(xiong)(xiong)圍減去下(xia)胸(xiong)(xiong)(xiong)(xiong)圍所得到(dao)的(de)尺(chi)(chi)(chi)(chi)寸。國際通用的(de)罩(zhao)杯(bei)(bei)也有(you)制(zhi)定的(de)標準，因(yin)此我們在選(xuan)購(gou)時也可以(yi)根據這個(ge)標準，向售貨員表明自己(ji)(ji)的(de)罩(zhao)杯(bei)(bei)大(da)小，這樣買到(dao)的(de)文胸(xiong)(xiong)(xiong)(xiong)才(cai)不會偏大(da)或(huo)偏小。

通(tong)常選購(gou)文胸也有(you)一定(ding)的技巧，簡單(dan)來說就(jiu)是(shi)分為看、摸、拉、試四個步驟。看主要就(jiu)是(shi)留意布紋(wen)是(shi)否(fou)對(dui)稱，罩杯是(shi)否(fou)大(da)小(xiao)相同以及吊環是(shi)否(fou)容易刮傷(shang)皮膚；摸則(ze)(ze)是(shi)弄(nong)清楚面料(liao)是(shi)否(fou)舒適、是(shi)否(fou)吸(xi)汗(han)，做工(gong)是(shi)否(fou)精細；拉則(ze)(ze)是(shi)弄(nong)清楚文胸是(shi)否(fou)有(you)彈性，柔(rou)軟(ruan)性如何，是(shi)否(fou)能隨著身體的運動而作出調(diao)(diao)整；試主要是(shi)找到感覺，肩帶是(shi)否(fou)能合(he)理調(diao)(diao)整好，花邊是(shi)否(fou)柔(rou)軟(ruan)，會不會有(you)刺痛感等。弄(nong)清楚了(le)這些(xie)問題(ti)，挑選文胸就(jiu)不會太難了(le)。