Logs,
I buy them at Office Max (Staples, printer shop). They come in 8.5 X 11 sheets - 6 sheets for $9. 2 sheets can do 1 doz arrows. Much cheaper than comercial wraps. But...............
They are not water proof. And they will fade a bit in the sun. They also are not as scratch resistant as the good ones.
As long as you do not soak them they seem to last fine. I hunted with the same 5 in my quiver for months, with no damage.
I recommend Goat tuff with them - I have used other glues (fletch tite) and did not get as good a stick as with Goat tuff.
Another great thing about them is they just peel off like butter when its time to refletch - no more scraping.