NANO SOFT BRISTLE TOOTHBRUSH2 pieces soft toothbrush (1 * White, 1 * Black), Micro-nano manual toothbrush measures 22.5*3*2cm, bristle's length is 0.07mm, it is convenient to take. ULTRA SOFTMore than 10,000 micro fine bristles are much thinner than other soft bristles, the toothbrush is delicate and soft, prevents tooth decay, strengthens gums, and cleans deeper between teeth and sensitive gum walls, specially designed for sensitive teeth. DEEP CLEANAdoptswhich thicknesses at 70m sterile fiber, which allows you to brush your teeth with 0 stimulation and gentle massage. The wave design can clean the mouth without dead ends, so you no longer have to feel the pain of brushing your teeth. ERGONOMICALLY DESIGNEDThe bottom is thick and the top is thin, Non-slip rounded handle. Ergonomically designed thumb grip allows you to have a comfortable and firm grip. IDEAL for SENSITIVE or RECEDING GUMSSoft nano bristle toothbrush are very suitable for the elderly, pregnant women, adults, gingival atrophy and people who wear braces; ultra soft toothbrushes can produce rich foam that do a good job of cleaning without damaging the gums, while giving gentle gingival massages.