The EXFIL® Carbon shell is made of high-strength, lightweight carbon fiber and features a Wilcox® W shroud* for mounting night vision devices. The Zorbium® foam liner provides the ultimate levels of comfort and impact protection and is compatible with tactical communication headsets. The CAM FIT™ Retention System with an integrated BOA® Fit System and Cam Lock sliders ensures a secure fit The EXFIL® Carbon is available with your choice of accessory rails: EXFIL® Rail 2.0 or EXFIL® Rail 3.0. The EXFIL® Rail 2.0 accessory mounting system is compatible with most EXFIL® accessories and features T-slots for custom mounting. The EXFIL® Rail 3.0 accessory mounting system is compatible with all EXFIL® accessories, including the EXFIL® Ballistic Visor and the EXFIL® Face Shield.