Hardwood series has an all wood handle designed to conform to the shape of a moving and spinning hand. Designed for regular to coarse, frizzy hair. Reinforced Boar Bristles. Boar’s hair naturally distributes the oils in your hair for a natural shine. The H4 and H3 have uniform bristles and the H5, H2, and H1 have swirled bristles. Swirled bristles are good for allowing course frizzy hair easy entry into the brush for a smooth shiny result. Made in Spain.