Iyo utegura ibirori byibirori, yaba ibirori by'amavuko, ubukwe, cyangwa guterana ibigo, imipira ikunze kugira uruhare runini mugushiraho imyumvire yo kwizihiza. Nyamara, imipira yuzuye irashobora rimwe na rimwe kuba umurimo unyonji, cyane cyane niba ubikora intoki. Aha niho intoki ifashe pompe ya ballon ihinduka igikoresho gikomeye. Igikoresho cyo guhuza kandi byoroshye-gukoresha ntabwo byoroshye ifaranze gusa