Petzl VERTEX VENT Black Safety Helmet with Chin Strap, AdjustableVentilated

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 outer shell
Very comfortable:
six-point textile suspension conforms perfectly to the shape of the head
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 with sliding shutters allow airflow through the helmet
comes with interchangeable standard comfort foam
Compatible with:
Petzl headlamps, using the mounts (front and rear slots)
all headlamps with elastic headband (headlamp clips)