Philips Sonicare Replacement Toothbrush Heads with BrushSync Technology, 8 pk. White Brand_St Ives Guaranteed Analysis: Crude Protein (Min) Guaranteed Analysis: Crude Protein (Min) 22 Ideal for live wells Use with a Philips Sonicare brushsync compatible handle (diamondclean smart or protectiveclean) to unlock smart features: Brushsync mode pairing triggers your handle to select optimal mode and intensity level for exceptional plaque removal (certain models only) The Philips Sonicare Optimal Plaque Control brush head features a concave trim profile specifically designed to target tooth decaying plaque by hugging teeth and offering better conformity and surface area coverage