Materials for Wings and Wing Pockets for Nymph of the Mayfly, 1 package comprises 1 sheet with 24 of wings and Wing Pockets for 24 flies, and the (transparent) part of the sheet is also included that shall be glued to the part of the drawing of the corresponding wing.
The used material is warranted as non-toxic; when burnt for wings, it is not harmful to health. The package also includes the manual with usage instructions.