Not sure of the brand name, but I used to buy 1 pound boxes of #64 and #62 at an office supply. The box was green and white and they were labeled "crepe". Used them for 3 or 4 flying sessions and then discarded. I still have some from several years ago that are perfectly useable. I loop 2 #64's together to make bands long enough for a Kadet Senior. I know the knot will weaken the bands but with 6 on each side with a 6 pound airplane, they work fine.