THIN-SKIN for tying the wing-case on the COPPER-JOHN & other nymph patterns. Plus backs on scuds, sowbugs, crayfish and shrimp. Stretchable and transparent with a matte finish on one side, shiny on the other. Comes by the sheet w/ a "paper-backing" that makes it easy to cut to width(firm). Then peel from backing to use. COLORS: (1)Clear(for the COPPER-JOHN), (2)Gray, (3)Tan, (4)Light-Olive, (5)Olive, (6)Shrimp-Pink, (7)Burnt-Orange, (8)Mottled-Oak-Turkey, (9)Mottled-Orange, (10)Mottled-Olive, (11)Mottled-Golden-Stone, (12)Black, (13)Chartreuse, NEW FLY SPECKS COLORS(really Buggy!): (14)Clear/Blk-Specks, (15)Tan/Blk-Specks, (16)Olive/Black-Specks, (17)Clear/Black-Alligator-pattern