Size #10. If you're someone who finds beauty in simple things, then you will like this hopper pattern. Nothing fancy, just some foam, a little flash, rubber legs and some deer hair. Now, add water and you're fishing! No floatant needed, this fly will float all day, just cast it into a likely spot, like near the stream bank where there is plenty of vegetation. Give it just a couple of little short jerks, let it rest, then some more little short jerks ( just enough to move the legs ) let rest again, and be ready. Trout love hoppers!