["[Perfect Brushing Partners] The brush heads match the Waves powerful core technology and ability to align with the dentist-recommended Bass brushing method allowing them to better conform to the surface of teeth for a comprehensive clean." "[TÜV Rheinland Approved] The brush heads have been certified by TÜV Rheinland ensuring that theyre both high quality and safe." "[High-Quality Bristles] The Gum Care brush head uses ultra-thin PBT bristles that reach deep into the gaps between teeth while still being gentle on gums and the Super-Clean and Ultra-Whitening brush heads use premium DuPont bristles for incredible cleaning power. The brush heads are also equipped with 90-day Reminder Bristles that let you know when its time for a replacement." [Dynamic Balancing] The brush head features an innovative metal counterweight attached to the back allowing for stable oscillations reduced noise and protective gum care which all adds up to a more comfortable brushing experience. "[A Fit for Every Smile] The three brush heads each suit different oral care needs. The Gum Care brush head are gentle on teeth and gums the Super-Clean brush head reaches deep into gaps for an efficient clean and the Ultra-Whitening brush head offers powerful cleaning to help brighten those pearly whites! Whats Included: Laifen Ultra-Whitening Brush Heads (3-PackWhite)"]