The K1 Kastaplast Vass is made for long and smooth S-Curve throws and tailwind bombs. It’s a highly workable, big distance driver for the common player. Big arm throwers will find it to be an incredible disc for long turnovers with tons of glide. K1 Glow from Kastaplast is one of the market’s best luminescent discs, both when it comes to shining brightly and shining for a long time. In general, the K1 Glow plastic itself tends to affect the flight characteristics of the disc, so it becomes somewhat more overstable than the usual K1 plastic.
