These Japanese style flies are a labor of love. Featuring these fine materials: Whiting feathers & Peacock herl, Silk bodies & "Silk Eyes", and the extra care spent in at every single step of construction. It's a great pleasure to work with such quality materials. If you don't loose them, or the moths don't find them, you could literally pass these on to your grand children. It is recommended to dry them thoroughly after use to protect the silk. The top-water flies are tied on light "pupa/shrimp" hooks, wet flies on heavy "Klinkhamer" hooks. Barbed & barbless hooks too.