I have just bought a Rohan Cirrus Windproof Top. It is described as "phenomenally breathable". After walking up a modest hill, wearing the Cirrus over a shirt, I was cold and damp. On removing the Cirrus, I found the inside to be sopping wet with condensed sweat. It was about as breathable as a plastic bin liner.
Has anyone else found this?

welcome to the world of windproofs. you'll still get wet inside but you'll dry a lot quicker that with goretex/event.

So far this year I've spent time in a Golite Wisp, a Haglofs Kaza, a Montane Featherlite, an old Karrimor Manta Ray and a Rab Quantum.
I haven't really had an issue with condensation as they're all pretty slim fit on me. Over a mid layer the'd be tight.
That seems to be the solution, the sweat soaks straight into the fibres and away from you. Dries quicker as well that way.

PS The Golite shirt is made of much better fabric than all the whining about it would suggest.

Jeff,

Perhaps the Rohan isn't performing well, but to realise what happened to you, it is good to appreciate the basic physiology. Your body won't start triggering a sweat response to exercise unless you are overheating. The answer to that is remove clothing, ventilate or slow down. Don't be fooled - breathability is extremely useful but temperature management is the key to staying dry in non-rainy conditions.

Incidentally, what where you wearing underneath the windproof?

The best way to deal with that is to have sleeves that roll up on your wind shirt. Exposing the wrists works wonders.
A windshirt and baselayer is the combination of justice.

I spent most of yesterday in a windshirt and baselayer, Haglofs Kaza and Icebreaker 200wt l/s. Through showers, wind and sunny spells I regulated myself with the front zip and sleeves. Felt comfy all day.

Over the wrong baselayer it all goes wrong of course as John is also enquiring.