The Mason Pearson Child's Sensitive Boar Bristle Hair Brush (CB4) is a smaller "child's" size brush with 5 rings of boar tufts. The brush is 6 3/4 inches long (head length is 3 1/2 inches) and 2 inches wide. Mason Pearson has established a unique reputation for hairbrushes. The reason for this is in the quality, design and versatility of the brushes. Unique spired tufts of bristle set in a pneumatic pad so that every tuft penetrates right through to the scalp.