Mason Pearson Pocket Bristle & Nylon BN4 hair brush is ideal for normal to thick hair of short to medium length, or as a second brush for on the go use for hair of any length. 5 rings of tufts with natural, pure boar bristle (B) mixed with nylon. The durable nylon strands, with specially rounded ends, are longer than the boar bristles and penetrate through the hair to massage and stimulate the scalp, bringing out the natural oils. Designed with a unique rubber cushion pad, made by hand using Mason Pearson’s original techniques, allows for effective and efficient brushing. It is kind on the hair to use and massages the scalp. Overall size 6 3/4 inches by 2 inches.