These Guinea Skins are the finest I have seen. The skins measure 18" x 12". With a skin this large, the fly tier has a great range of feathers to choose from, large rump feathers to hackle steelhead flies or fine shoulder feathers for trout soft hackles. Guinea gives a steelhead fly a nice look whether using the natural black and white feather or using a dyed feather as hackle. The dye work on these skins is impeccable. Use Guinea for spey flies, steelhead flies, classic salmon flies, also cheeks on bass and saltwater lies. Give a trout wet fly a turn of guinea hackle to give the fly a natural buggy look.