The ultimate in goggle systems, the Spectra Proteus is the newest and hottest system available. The engineered polymer mask features a lower profile, creating a smaller target than any previous system. Uni-body construction, advanced audio capability and fog-resistant performance make this the most advanced system ever.
The JT Proteus Mask is older, so while it may be available used and in a few cases new, it is not commonly available anymore.
2)2 way fan switch works great to move air
3)slim profile...this masks hugs your face like a second skin
4)excellent protection for ears...it wraps around them
5)great vision/no fog!
2)the directional ear pieces will not move unless you take the mask off(jt needs to loosen them so they can rotate easier)
I would recommend this mask if you can afford it
It is without a doubt the most advanced goggle system in production...the downside is there is a stiff price to pay for that technology.