• Optimal protection:
  - the DUAL chinstrap has two positions, corresponding to two uses: high strength, limiting the risk of losing the helmet during a fall, and low strength, limiting the risk of strangulation if the helmet is snagged while the user is on the ground
  - shock absorption achieved through deformation of the liner
  
• Lightweight and comfortable design:
  - two-part liner, EPP (expanded polypropylene) and EPS (expanded polystyrene) for reduced weight
  - CENTERFIT feature allows perfect centering of the helmet on the head, thanks to its two side adjustment wheels
  - FLIP&FIT system allows the headband to be positioned in a low position, guaranteeing that the helmet fits securely on the head. The system folds into the shell for easy storage and transportation
  - ventilation holes allow airflow through the helmet
  - comes with changeable absorbent comfort foam
  
• Compatible with:
  - Petzl headlamps, using the mounts (front and rear slots)
  - all headlamps with elastic headband (headlamp clips)
• Head circumference: 53-63 cm
• Weight: 415 g
• Material(s): ABS (acrylonitrile butadiene styrene), EPP (expanded polypropylene), EPS (expanded polystyrene), nylon, polycarbonate, high-strength polyester, polyethylene
  

Certification(s):

• Certification(s): CE, EN 12492, ANSI Z89.1 Type I Class C
  

References:

• One Petzl - STRATO® VENT HI-VIZ Helmet