Lancer Tactical Airsoft Adjustable ABS Maritime Helmet (MEDIUM/LARGE) - TYP Adjustment Rear Dial Knob for Head Size adjustment. Available MED/LG 20.3" - 22.4" (53CM - 57CM ) Side Rails w/ Goggle Strap Clips & NVG Shroud, Bungee Retention for NVG Velcro Panels Allow Fitment of Patches, IFF, Safety Lights, and Nametapes Lightweight But Durable, High Quality Construction for Head Protection. Not Designed to Withstand or Protect Against Real Ammunition. Solely for Airsoft Play Available Color: Black, Foliage Green, Typhon, Dark Earth