The FOREO ISSA 3 Black Toothbrush offers 4-in-1 complete oral care for your teeth, gums, cheeks, and tongue. ISSA 3 is designed to clean thoroughly, ensuring your teeth remain plaque-free and your entire mouth is significantly cleaner. This toothbrush is 100% waterproof and constructed from medical-grade, non-porous, quick-drying silicone, making it a highly complete oral care device. It features a sleek Hybrid Wave brush head with improved bounce-back silicone bristles that are up to 2x stronger and 10,000 times more hygienic than nylon, contributing to extended brush head life. These bristles are fused with sturdy PBT polymer in an elegant, slim-fit design to easily reach all areas of the mouth.