• 【4X LONGER DURABILITY】 Durable taper bristles ensure that your hair looks like a new toothbrush for a long time. Compared to standard nylon toothbrushes, NOILA toothbrushes are four times more durable than regular nylon toothbrushes. This means that the bristles are not open and not sanded to your teeth like the first bought toothpaste • Super fine bristles: The ultra-fine bristles massage your gums, and each teeth, gently remove the dirt. The soft and supple ultra-fine hair is soft to massage your gums in the state of the bunch, and each piece is firmly tucked into the teeth to remove dirt, so you can clean the inside of the oral without damaging your gums • (Thin Compact Head) This solves the structural problem of removing your teeth from getting in between your deep teeth and cheek. The NOILA 0.18 inch (4.5 mm) thin head toothbrush solves the problem of deep teeth and cheeks, where the head thickness is difficult to get in the gap between the deep teeth and cheeks • Ergonomic Design: This product is designed to be used for a long time, so it reduces stress that you feel unconscious. This product is meant to be used every day whether you're busy mornings or tired nights, so you will want to use it for a long time, so the ergonomic design provides a "fatigue-resistant" handle. You will see how tired you had from regular toothbrushing