Kujerar Falo YO yana bin ka'idodin ergonomic na ɗakin zama mai kyau da layin geometric tsarkakakke waɗanda ba haɓaka haruffa "YO". Yana haifar da bambanci tsakanin babban, "namiji" gini katako kuma mai haske, 'mace' m zane na wurin zama da baya, an yi shi da kayan aikin 100%. Ana samun tashin hankali na mayafin ta hanyar sadarwar fiber (wanda ake kira "corset"). Kujerar falo ta cika da wata kujera wacce ta zama tebur a gefe lokacin da aka juya 90 °. Zaɓuɓɓuka masu launi daban-daban suna ba su damar sauƙin shiga cikin tsaka-tsaki iri iri.