The Oral-B iO Gentle Care refill is engineered for the ultimate gentle cleaning experience. Featuring up to 4,000 extra-soft bristles and a unique cushioning outer ring, these heads are designed to protect sensitive gums while adapting perfectly to the curvature of your teeth. Combined with Oral-B's iO revolutionary micro-vibrations, you receive a professional, thorough clean that is incredibly kind to your mouth. Key Features & Benefits 4,000 Extra-Soft Bristles: Meticulously arranged to provide a high-density, gentle clean that is ideal for sensitive teeth and gums. Cushioning Outer Ring: Specially designed to protect delicate gum tissue and adapt to the unique shape of every tooth. iO Magnetic Technology: Combines Oral-B's iconic round brush head with gentle micro-vibrations for the most efficient and smooth cleaning performance. Precision Curvature: The bristles precisely follow the gumline and tooth surfaces, ensuring no spot is missed even in sensitive areas. 4-Pack Convenience: Enjoy a year's supply of dentist-recommended cleaning (based on 3-month replacement intervals) in one convenient delivery. Product Specifications Product Line: iO Series Refills Model: iO Gentle Care (4-Pack) MPN: 4210201328889 Colour: White Power Source: Compatible with Oral-B iO Handles Only Features: 4000 Soft Bristles, Cushioning Outer Ring, 4 Brush Heads Included Compatibility Guide IMPORTANT: These heads are ONLY compatible with Oral-B iO Series (iO3, iO4, iO5, iO6, iO7, iO8, iO9, iO10). NOT Compatible with: Oral-B Pro, Genius, Smart, or Vitality series. NOT Compatible with: Oral-B Pulsonic handles. What's in the Box? 4 x Genuine Oral-B iO Gentle Care Replacement Brush Heads (White)

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