For the first time ever, a disc from Discraft will be released with the Danish "Prøve Flyvning" stamp. This stamp is known from Discraft's English Test Flight series, and with the new Zone OS in 2023, a Danish version will come in a limited edition. The production of this disc series is done in collaboration with Team Discraft's 13 times Danish champion Karl Johan (KJ) Nybo. 

Zone OS is an incredibly overstable midrange that you can always count on and you always know how it will fly when you throw it. The disc can withstand a very large moment from your throw and regardless of whether you are into spike hyzers or power advance throws, your Zone OS will help you on your way.

NOTE: In production, Discraft has noted the weight on most Zone OS with a pen or marker on the edge of the disc. The color of the stamp may differ from the shown pictures.