Speed 4.5, Glide 3, Turn 0, Fade 3 | Play smart with JÄRN. Being overstable enough to beat the headwinds and fade predictably, this disc is dedicated to the controlled approach game. Järn’s flight pattern makes it just as competent for touchy flex shots as for flat-out hyzers. Its low profile makes it easy to grip and to release. Järn is Swedish for iron.