The Elgydium Inspiration Design Hard Toothbrush features a modern and ergonomic design with hard bristles for effective dental cleaning. This toothbrush combines style with functionality to provide thorough oral hygiene. As a personal hygiene product, this toothbrush should be replaced every 3-4 months or sooner if the bristles become frayed. The hard bristles are suitable for those who prefer a firmer brushing experience, though users should consult their dental professional about the most appropriate bristle firmness for their specific needs.