I have tried most jacket fabrics now and through testing I have found eVent to be the most breathable, waterproof fabric I have personally tried. My Rab Drillium jacket is so breathable that I am able to cycle in it. I am a cynical person and only ever cycle in pertex smocks or soft shell jackets, this is after some sweaty experiences in Paclite and other waterproof jackets. My eVent jacket has been great though. I keep wondering whether I am working hard enough in it as I cannot get any level of condensation to build up in it.
Some have criticised eVent's durability but we have not had an unusual level of returns on this fabric. In my opinion, and I am not a lab, eVent is far more breathable than Goretex Paclite. However, I am unable to notice any difference in the breathability between heavier eVent jackets such as a Rab Bergen jacket and GTX Proshell. I think this is that in the 3 layer jackets (those without a drop liner) I have worn have been when I have worn more layers and not had the membrane close to the skin as I have worn base/mid layers and the condensation level is therefore further away from me.
Another advantage of eVent shells is there comparativly low prices. You can buy a fully featured mountain jacket such as the Rab Latok Alpine for under £250.
Let me know your opinion
