Kato Polyclay is the newest of the polymer clays, developed in 2001. It is available in 17 colors, including translucent and metallics.
Kato is firmer than Premo, but not as firm or crumbly as Fimo Classic is before conditioning. Like Fimo Classic, Kato Polyclay doesn't turn sticky with extended periods of handling. It is an ideal choice for detailed canework. Once cured, it is very strong and flexible.