Commonly called ‘Nylon’, Golden Synthetic has some unique characteristics in that its retention, snap and spring are all superb. The Series 235 have a run of goat hair in them too while being constructed of two types of synthetic blended together. The Series 235 is designed to hold good amounts of liquid for washes and also double up as a good synthetic stippler to create foliage and shrubbery effects. A favourite to dab foliage into your work. They were designed by Dave Pilgrim and Rosemary years ago. The Series 235’s work well in Watercolors, Oils, Acrylics, Water mixable Oils & gouache though they are most favored by watercolorists and acrylic painters.