Proper size: the micro-nano manual toothbrush measures 18 x 1.3 cm/ 7.1 x 0.5 inch, bristle's length is 1 cm/ 0.4 inch, suitable size for easy holding and deep cleaning, also allows for convenient taking. Suitable for: this delicately-designed toothbrush adopts nano technology, great for those who have fragile teeth and other teeth-related worries. 20,000 Soft bristles: more than 20,000 pretty soft micro-nano bristles, penetrate the sulcus of the teeth and the gum line, deeply and smoothly clean the teeth and remove the filthy without hurting the tooth enamel. Multi-duty: soft bristles of the toothbrush help you prevent teeth recession from aggressive brushing, with comprehensive cleaning function, also suitable for tongue-cleaning. Package includes: 4 soft toothbrush in assorted color, you can share them with your friends and family as gift, also portable for outdoor activities like travel or camping.

Best Sellers Rank: See Top 100 in Health & Household. Item Firmness Description: Ultra Soft,Soft. Power Source: Manual. Special Feature: Built in Tongue Scraper. Age Range (Description): Kid. Brand: Boao. : B084WXL622. Manufacturer: Boao. Item model number: Boao-Soft Toothbrush-01. Product Dimensions: 7.09 x 0.51 x 0.39 inches; 2.82 Ounces.