Jack Dean Gentlemen's Military Hair Brush: The Jack Dean gentlemen's grooming classic military hair brush is made from light wood and filled with natural black bristles. Specifically designed for easy grooming, the natural bristles are stiffened with nylon for massaging the scalp while grooming coarser hair textures. The military brush has the Jack Dean logo proudly displayed on the top of the brush. Brush Dimensions: Brush Length: 110 mm, Brush Width: 60 mm, Bristle Length: 20 mm.