[rmzalbar]

I apologize, I posted in the wrong forum - please delete. I have reposted in the introductions forum. Thank you!
 
http://www.head-fi.org/t/709622/highly-isolating-iem-recommendation-for-helmet-use

 

[tinyman392]

  I apologize, I posted in the wrong forum - please delete. I have reposted in the introductions forum. Thank you!

 
I know you said you posted in the wrong forum, but I don't feel like looking up your repost.  Two suggestions come to mind:

1. Aurisonics Rockets (when released)
2. HiFiMan RE-400 (or RE-600)
3. Etymotic ER-6(i)

OK, I lied, 3 suggestions, but that third one is hard to find nowadays XD  If you want more isolation, I also suggest using foam tips   Good luck. 

 

[rmzalbar]

Thank you for the suggestions. I initially looked for the ER6i as they are stubby and deep enough to seem ideal, but of course they are not available anymore. The follow-ons are all long sticks that might cause issues.
 
The rockets aren't available yet, but claim to isolate 24dB, which isn't quite good enough - 30dB would be a comfortable minimum. The HiFi 400's I can't find any isolation info on, they look fairly typical as far as form factor and insertion depth, but I will look into this.
 
Link to my other post:
http://www.head-fi.org/t/709622/highly-isolating-iem-recommendation-for-helmet-use
 
 
Thank you!