The locking system and interior are designed for maximum convenience and airflow:

this helmet features an aerodynamically engineered polycarbonate shell using CAD technology

Pintura multicapa de alta calidad con protección UV

Although it has motocross roots

ACERBIS - CASCO DOUBLEP GIALLO FLUO/NERO Size:L/XL The locking system and interiorProtection Casing: Polycarbonate outer casing for impact resistance. Safety: Approved according to EN1078: 2012+A1: 2012. Material Casing: Polycarbonate construction for durability. Interior: Removable, hypoallergenic and washable interior. Comfort Ventilation: Numerous holes for adequate helmet ventilation. Adjustment: Size adjustment system to ensure maximum comfort. Weight: Lightweight at 290g in size S M. Precautions Maintenance: Regular cleaning