Explosion-proof Riot Helmet Protective Security Full Helmet w/ Transparent Mask

Shell material: ABS + PC
Mask material: PC surface anti-fog hardening treatment (injection molding) 2.5-3.4mm
Size: 270x207x215mm
Net weight: About 1.3kgs

Features:
Sealed Waterproof Strip, 
Fixed Metal Rack, 
Vents, 
Leather Neck Protector, 
Internal Foam Pad, 
Lower Bator, 
Quick Release Buckle
The maximum head circumference is 54cm