I recently bought a couple windshirts to try out and now I think I want to give another a try. They are both highly breathable. Both are in excellent condition, the squamish is practically brand new without tags. The Houdini has maybe been used 10 times, it is the version without the zipper flap and reflective logo.

Patagonia Houdini - Orange - Size Large - $80

Arcteryx Squamish - Copper - Size XL - $85
I will post pictures later. Prices are Paypal gift (or add 3%) and include shipping.
Thanks!