Soft bristles: The bristles greatly improve the brushing process. Advanced bristle technology can avoid uneven bristle damage to gums, gently clean and protect gums. Thoroughly clean teeth: More than fairly soft micro-nano bristles penetrate the sulcus of teeth and gum line, clean teeth thoroughly and smoothly, removing dirt without damaging tooth enamel. This finely designed toothbrush uses nanotechnology and is ideal for people with fragile teeth and other dental problems. Ergonomic design: The Toothbrush handle is ergonomically designed and suitable size for easy holding and thorough cleaning. They have a comprehensive cleaning function, which is also suitable for tongue cleaning. The package includes: 2 x black soft toothbrush, 2 x white soft toothbrush, which can be shared as a gift with your friends and family, and which can also be used for outdoor Activities such as traveling or camping are portable.