BigRedwrote a review of Oakley Mod 5 Helmet on November 30, 2016
Oakley has done a nice job with this helmet, and was able to find a way to make it work with all of their goggles. For several years I have tried most of the helmet manufacturers out there, to try and find something that will work with my Flight Deck goggles. Nothing until now, fit so well.
Oddly enough, I find the Small Brim to work the best - creates the tightest seal with very little gap.
The helmet itself is very comfortable, easily adjusts, vents well, holds heat when needed, and weighs just right - not the lightest, but not so heavy you constantly are reminded it is on.
Starring you right back in the eye, is the glaring failure of audio compatibility. While the ear cup design is very comfortable, the little "drop in" slot does not provide enough room to insert after market bluetooth audio - such as Chips - without causing significant discomfort.
For me the helmet is still a keeper, and now I just need to use my Outdoor Tech Adapt to make my wired headphones wireless - but in this example, the ear cup design is flawless.