The Beauty Formulas Toothbrush Wave Action Medium 3S is a manual toothbrush featuring a wave-shaped bristle design for enhanced cleaning. It has medium bristle stiffness, making it suitable for those who prefer a firmer brush. The ergonomic handle ensures a comfortable grip, while the 3S likely refers to its triple-action cleaning (plaque removal, gum care, and stain cleaning). Ideal for daily oral hygiene.