Innovative Wave-shaped Brush Head Design: Featuring an innovative wave-shaped brush head design with 10,000 fine and soft bristles in a single-molded form, equipped with sharpened edges for deep cleaning of interdental spaces and gentle gum care. Provides flexible yet full coverage within the oral cavity, effectively removing residue buildup. Gentle Care: Specifically designed for sensitive teeth and gums, the bristles are soft and delicate, providing a gentle and effective cleaning experience. Suitable for sensitive individuals, including pregnant women, without causing irritation or discomfort. Compatible with Philips Sonicare Electric Toothbrushes: Compatible with Philips Sonicare electric toothbrush snap-on models including C1, C2, C3, 4100, DiamondClean, and more. Ensures your brush always has the best head for long-term oral health, particularly suitable for individuals with sensitive teeth. Durable and Long-lasting: Made from high-quality materials, the bristles exhibit superior durability, remaining resistant to deformation or wear over time, offering lasting comfort for those with sensitive teeth. Portable Storage Case: Includes a convenient portable storage case for easy travel, maintaining brush head cleanliness, and ensuring on-the-go oral care convenience. Ideal for individuals requiring special attention to oral health. Soft Toothbrush Replacement Heads (4 Pack), Compatible with Philips Sonicare - Gentle for Sensitive Teeth & Gums, with Portable Box - Wave Bristles