Review (2/5): Very Hard, Stiff Bristles
Too bad these "Compact Brush Heads Compatible with Philips Sonicare Diamond Clean Toothbrush - 4 Pack" have bristles that are VERY hard/stiff! Although these brushes were listed to fit my Sonicaire FlexCare, they are not a good fit. The brush wobbles even though it's pushed all the way onto my toothbrush. Too bad Philips no longer makes compact brush heads for their Sonicare toothbrushes for adults.