Circle Fly wads have recently been improved. The 1/8” nitro card wad is now 100% waterproof, so it may be loaded in black powder shot shells using lubed cushion wads and the moisture will not soak through the nitro card and foul out the powder charge. The overshot card is now thinner and lighter, but stiffer; it is .025” thick instead of .030”, but is not made from a laminated stock like the old one was, so it is actually stiffer.