to bad the cosmos doesn't support the headset strap cuz this halo strap kills the bk of my head after 30min of play, its like the bk pad is squeezing the skin on bk of head as u tighten it, cant let it loose to much or the weight will cause it to sag in front, the head strap would allow u to pull hmd closer to face, hence the light coming thru the nose area 😛 only prob I have with the cosmos, everything else is groovy