Pretty good price for these popular brush heads. In store only, but hopefully some available close to you.
As one of Oral-B's premium replacement toothbrush heads, the Floss Action toothbrush head provides a comprehensive clean vs. a regular manual toothbrush. Its bristles clean tooth surfaces while the MicroPulse bristles reach and clean deep between teeth for plaque removal vs. a regular manual toothbrush.
this is the best head oral b has. it is my favourite, i tried them all.
just buy generic for the regular bristles, it's the same thing.