This brush is best suited for normal to thick hair of long to extra-long length. It has 8 rings of tufts of carefully selected pure boar bristle, each of which contains a nylon strand. 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. The tufts are set in a pneumatic rubber cushion that regulates the penetration of each tuft to gently, but effectively, condition the hair and scalp. Overall size is 9 inches by 3 1/8 inches. To keep your brush in tip-top shape a cleaner brush is included, as well as complete use and care instructions.