The Entity RH30 Road bike is a lightweight, performance road helmet with extra venting for fast-paced road riding. Exceeds Australian Helmet Standards - the toughest in the world Ultra-lightweight design - only 250g Dual In-Mold construction with a sleek, low profile fit that provides incredible strength, resilience and aggressive style 25 strategically placed vents maximise airflow and further enhance aerodynamics Comfortable and anti-bacterial washable pads absorb excess moisture Dial fit system provides easy one-handed adjustment Approvals EN1078 / AS/NZ2063:2008 Sizes - Medium (Head Diameter 55-59cm), Large (Head Diameter 58-61cm)