Product Description Cosmotop Spin Travel Brush 1573 : According to daVinci Brush, the Cosmotop Spin holds more water than any other synthetic. This unique daVinci brush is popular for its water-holding capacity and excellent value in large sizes. It is a blend of 5 different diameters of extra smooth synthetic hair. daVinci has built specialized machines that can sort synthetic hair in varying diameters. This sorted hair is then turned over to a master brush maker who hand shapes the Cosmotop Spin. The thicker hair is placed on the outside and the thinner hair in the middle to ensure high color-absorption while maintaining a fine point, stable shape, and energetic spring.