The "Premium Care Series" with a wide head that changes the common understanding of toothbrushes. Experience an exceptional brushing feel that you can recognize after just one use. The head is approximately 25% thinner than our conventional products, designed for easy maneuverability in the mouth. The densely packed bristles envelop the teeth, allowing the fine tips of the thin head to reach the back teeth where plaque buildup is often missed. The ultra-fine bristles with a diameter of φ0.01 mm penetrate periodontal pockets to remove plaque, while the flat bristles effectively eliminate plaque from the tooth surfaces. The outer bristles are soft to gently care for the gums, while the inner bristles are hard to thoroughly clean the tooth surfaces and the gum line, featuring a double tufting design. With a high tuft density, the contact area between the teeth and the brush is large, enabling efficient plaque removal with regular brushing. The wide head has a high number of tuft holes, specifically 48 holes. It features a regular head with 7 rows that covers a wide area of the teeth. Bristle hardness is soft. Model number: B-8001S. Information tag number: 81. Bristle material: saturated polyester resin. Main body resin material: polypropylene; rubber part