The JK (Juliana Korver) Aviar is made from the driver mold in a special blend of durable Pro-line Plastic that is more flexible and grippier than the other Aviar models. It has the same flight characteristics as the KC Aviar. Its softer plastic is better in colder climates and for those who have dry hands and require a tackier grip.
"This is my putter, but I think the real strength of this disc shines when it is thrown as a driver. I use this disc for drives and midrange shots between 240 ft and 150 ft. I will often use it on shorter upshots as well, but feel quite confident with it when throwing it hard. I really like this disc for short sidearm shots as well." Juliana Korver - Pro Disc Golfer and 5 Time Women's PDGA Professional World Champion