K1 Soft is the flexible version of Kastaplast’s K1: same durable formula, more give and more grip. It replaced the retired K2.
That makes it the cold-weather and wet-weather Kastaplast option, and the putter plastic for players who want a softer release. Three moulds are listed in it.
It goes softer in heat and it’s less stiff on a full-power drive than plain K1.
