Petzl A11 Vertex Vent Helmet

VERTEX® VENT Comfortable ventilated helmet for work at height and rescue Six-point mesh liner conforms to the shape of the head for improved comfort. Shock absorption achieved through deformation of the outer shell. CenterFit adjustment system ensures centering and optimal stability of the helmet on the head Ventilation holes with sliding shutters allow the ventilation to be adjusted as needed from the outside Side slots for mounting hearing protection Inserts for accepting a VIZIR face shield Slot for mounting a PIXA headlamp Four clips for mounting a headlamp with an elastic headband Chin strap designed to limit risk of losing helmet during a fall ( strength greater than 50 daN) Specifications Size: 53-63 cm / 20.9-24.8" Weight: 455 g / 16 oz Available in six colors: VERTEX VENT ( A10VYA) : yellow VERTEX VENT ( A10VWA) : white VERTEX VENT ( A10VRA) : red VERTEX VENT ( A10VNA) : black VERTEX VENT ( A10VOA) : orange VERTEX VENT ( A10VBA) : blue Certification CE EN 12492 : meets the requirements of the EN 397 and EN 12492 standards for protection against impact. Meets the optional requirements of the EN 397 standard for lateral deformation and use in low temperatures. UIAA ANSI Z89.1-2009 Type I Class C.