Oral B Power Toothbrush iO Refill Gentle Care 2 Pack WhiteThe Oral B io series combines powerful, but gentle micro vibrations with Oral B unique dentist inspired round brush head design for a professional clean feeling every day. The Oral B iO GENTLE Care brush is specially designed for gentle and effective cleaning on sensitive areas and gums. Dentists recommend changing your toothbrush head every 3 months For best results Size: 2 Pack KEY FEATURES Gentle care adapts precisely to the curvature of the tooth