Safety certification items

1. Visibility (except JCF) – Top view 25, bottom view 25
2. Retention system
   - Measure the elasticity and position loss of a chinstrap in case of impact
3. Measurement of material safety
4. Impact absorption test
   - Free fall (1.5 m in height) in high and low temperature, artificial aging, and water immersion conditions
5. Gravitational acceleration standards (CE: 250G, KC, JCF: 300G)
   * The less impact velocity and impact time are, the safer a helmet is.