The Gentex SPH-5 Helicopter helmet provides superior protection and comfort in a lightweight design. Its high-strength, lightweight Para-Aramid and reinforced with epoxy resin shell, it includes a polystyrene energy-absorbing liner and a comfortable fitting system. The wide yoke-style retention system stabilizes the helmet and can be adjusted for optimum  fit with the chin and nape straps. Crushable sound-attenuating earcups screen out excessive noise levels. The visor systems include optically correct, abrasion-resistant, polycarbonate lenses that protect the eyes from glare, wind, and dust. SPH-5 helmets are available with single, dual visor or ANVIS quick disconnect dual visor assembly.  Standard color is white.

 

SPH-5® helicopter helmet features
Visor lens	Impact resistant polycarbonate. Protects from harmful UV rays. Single visor helmet: Dark lens. Dual visor helmet: Outer dark and inner clear lenses. Optional: Amber, high contrast, and gradient lenses
Shell composite	Para Aramid composite with epoxy resin
Liner system	Pre-formed Thermoplastic Liner (SCL®)
Weight (without communications)	2.7 to 3.5 pounds (1225 - 1585 grams) Paint, art, and communications affect weight.
Chin strap	Double D-ring and snap, 300 lbs pull strength
Sound attenuations	24 db at 1,000 Hz, 43 dB at 4,000 Hz
Impact decelerations	Crown: 300g at 17.5 fps Earcup: 175g at 19.6 fps
Sizing	Size Head Circumference Head Length  Small Less then 21 3/8" 7 3/8"  Regular 21 3/8"-22 3/8" 7 7/8"  X-Large 22 3/8 - 24 1/4" 8 3/8"  XX-Large Over 24 1/4" 8 5/8"