Material: soft bristles Packing:blister pack with 4 heads FEATURES:

Clinically proven to clean teeth better than a manual toothbrush Dentists recommend you replace the head every three months ***The Generic Oral-B Sonic Replacement Heads are meant for Oral-B Sonic VITALITY ONLY. Not for the PULSONIC Toothbrushes.***

• 4pcs/pack replacement brush heads designed to fit Braun Oral-B electric toothbrushes and plaque remover models.
• Soft, rounded bristles in the center of the head protect teeth from harmful harsh brushing.
• HEALTH & SAFETY STANDARD: The bristles are made of ultra-soft nylon which is easy on your gum, FDA approved and has passed dentist's official health and safety standard. One brush head will last for about 3 months under normal usage.
• FUNCTIONAL DESIGN : Advanced bristle design for superior cleaning
• EVERY THREE MONTHS: Reminder bristles fade from blue to white, helping you stay in line with dentist recommendations by alerting you when it's time to change your brush head

4pcs/pack replacement brush heads designed to fit Braun Oral-B electric toothbrushes and plaque remover models.Careonline