Descriptions: 
Pls noted: This is the Mask only, no any helmet. Thanks. 

Applicable helmets:
Ops-core Maritime Sea-based helmet      /      FAST helmet (highly recommended)*

Ops-core High cut Helmet

Ops-core Carbon helmet

Ops-core fast anti umbrella helmet

Crye Precision Airframe / AF Helmet

Team Wedy Helmet

ACH Advanced Combat Helmet

MICH2000, MICH2001, MICH2002

MTEK / MK helmet

Replicas and similar versions of helmets and above
One size fits all, compatible with helmets of different sizes.

Standard list of mask set:
Mask body *1
Black lens*1
Long mouth guard*1
Short mouth guard*1
Armor module*1 group
(Including Armor Block*3 Long Velcro*1 Disc Nut*3 Hexagon Screw*6 Thin Nut*3)
Ear protectors*1 pair
Screw*1 pack
Lens side baffle * 2