One brush head has been taken out and used, so as shown in the photo, only the bottom has been opened. If you are concerned, please only use the top 14. Recommended replacement every 3 months. - Brand: FIRIK - Product Name: Replacement Brush Heads - Compatibility: Oral B GENIUS, Oral B SMART, Oral B PRO, Oral B Vitality - Brush Material: Dupont bristles - Package Features: Sterilized packaging - Recommended Replacement Frequency: Replace every 3 months - Health Benefits: Cleaner teeth, healthier gums Thank you for viewing.