Soft silicone bristles, gentle on tiny teeth and sensitive gums, 100% medical/food grade silicone, BPA and PVC free. Double sided - cleans top and bottom, front and back at the same time! Directions: Wash thoroughly before and after use. Gently slide brush over teeth with a forward/backward motion. We know these look really weird, but they really work. Because they 'hug' the teeth, kids find them really easy to use, even on their own. Stage 3 (2-5 years).