ʻO ka ʻupena manu kekahi o nā hopena kūpono loa no ka mālama manu ʻana o nā kūlanakauhale. Hāʻawi ia iā ʻoe i kahi ala paʻa e hōʻoki i nā lepo manu mai ka hōʻino ʻana i kāu waiwai.
Hana ʻia kā mākou ʻupena manu i ka hana kaumaha Polyethylene (HDPE), popo-hōʻoia, hana ʻole a me ka hana paʻa. Ua kūpaʻa ʻo UV i ka upena manu 12/6, i hoʻopili ʻia o 6 monofilament. Hoʻomaʻamaʻa ʻia kā mākou ʻupena ma lalo o ka haunaele. ʻO ka palapala hoʻokō he 8-10 mau makahiki.