Whether you're working at height or on the ground, the Petzl Strato Vent Helmet keeps you protected and comfortable. This yellow helmet is lightweight (just 415g) thanks to its EPP/EPS liner, and it fits heads from 53 to 63 cm (about 20.8-24.8 inches). The cool CENTERFIT system lets you adjust the fit with side wheels, while the FLIP&FIT headband ensures a secure, low-position fit—and it folds into the shell for easy storage. The DUAL chinstrap is a game-changer: set it to high strength for rope access and rescue (EN 12492) to prevent the helmet from coming off during a fall, or low strength for ground work (EN 397) to reduce strangulation risks if it gets snagged. Ventilation holes keep air flowing, and you can add accessories like a headlamp, eye shield, hearing protection, or nape protector. Certified to CE, EN 12492, ANSI Z89.1 Type I Class C, and more, this helmet is a versatile, reliable pick for construction, climbing, industrial work, or rescue teams.