Mason Pearson Pocket Size Child. This pocket sized brush has 5 rings of fine, pure boar bristle tufts and is ideal for children aged 3 to 6 years. With one length of bristle only. Brush distributes the natural oils throughout the hair while exfoliating the scalp and stimulating circulation of the hair follicles. Measures 6.3/4 by 2. Color is dark ruby.