This a is 1/4 inch foam cylinder foam popper. I purchased the foam at Bass Pro Shops. A bobbin threader was used to pull the legs through a hole I made with a bodkin. I tied the back end of the foam down with about 15 or so wraps of thread. It's pretty simple to tie - rubber legs and feather for the tail and some palmered hackle. This is a good fly for bass and bream. The fly is on a number 8 hook. I usually buy my #8 hooks at Wal-Mart - about $3 or $4 for about 100 hooks.