The wave brush is black and red, and the thickness is various, usually to the upper and below the sponge and usually 20 x 25 x 30 x 35mm, in addition to the middle of the EVA layer it is 5 x 10 x 15mm. the largest thickness is 90mm with the EVA layer. we have Red, Black, Blue, Yellow, and Purple for your choice. Style: flat side with hole; wave side with hole; wave side without hole; wave height could be various.
FYI: This Wave Brush is only in the color RED.