Pocket Child Bristle Hair Brush CB4. 5 rings of fine boar bristle tufts. Create healthy hair habits that last a lifetime with the Mason Pearson Child hairbrush. This pocket-sized brush is ergonomically constructed with fine one-length boar bristles for a gentler brushing experience. Our aim is to reduce tangles and the brush-time tantrums to promote soft and silky hair. A child-friendly choice for Children age 3-6.