Healthy and Safety - Each toothbrush head has a pack bag and hygieic cap, this is not only for keeping clean, but also for travel around, it will take care of your oral healthy. Superior Quality - Design for noise reduction, Advanced planting technology keeps bristles from falling off, brush head material is strong, wear-resistant and not easy to break. Advanced Bristles - The material of bristles is US Dupont Tynex Nylon, medium soft, elastic, End-round bristles clean and protect gums, remind you to change it when the indicator bristles fade, usually 3 month. High Compatibility - These brush heads fully compatible with Philips Sonicare E-series toothbrush Essence, CleanCare, Advance, Elite and Xtreme Screw-on handles. Plaque Removal - 3D curved side cover more than 95% with gums, and powerful vibration can remove dental plaque more effectively include hidden areas.