Kyakkyawan Dolan tsana na Jima'i Kuma kusan Karshen Perarshe
Lsan tsana na Silicone na iya riƙe matsayi daban-daban don tabbatar kuna da nishaɗi iri-iri. Sun kuma sami ci gaba matuka tun bayan halittar su. A yau, yawancin 'yan tsana suna da nau'ikan fata guda biyu daban-daban, ɗayan ɗayan yana da ma'ana kuma zai iya yaɗuwa cikin jiki. Madadin haka, mashahuran jirgin ruwan Dutch masu kirkirarru suka kirkire 'yan tsana na jima'i a cikin karni na 17. Bayan duk wannan, suna buƙatar ƙawancen mata yayin dogon tafiye-tafiyen teku. Dangane da ingancinsa da kusan cikakkiyar tasirinsa, idan aka kwatanta shi da irinsa yar tsana.
