Oral-B UltraThin Green Tea Gum Care Toothbrush has individually tapered bristles that are infused with essence of green tea, providing a soothing, gentle and deep clean that improves your gum health in 14 days. Unlike most thin toothbrushes in the market, Oral-B UltraThin Green Tea Gum Care has bristles that are individually tapered at the tips, to gently clean between teeth and below the gum line.