This is Gateway Disc Sports most popular disc of any kind!
About the plastic: 4S putters are just about as flexible as a disc can be made and still hold its shape. These discs flex in half under 5 lbs of pressure and are very popular among newer players who need the extra grip in the chains on slightly off center hits.
The Wizard is a true, stable workhorse putter. It holds whatever line you throw it on with very little fade during its drop. It also works as a great putter in windy conditions and handles controlled power very well. This makes it an excellent choice off the tee for mid-range drives in addition to upshots.
A very consistent and accurate disc that should find its way into your bag.