I bought my suit three years ago after reading a report by Yermo Lamers
Last year at this time I put a sidecar on my bike and have been riding steadly all winter
In the winter I use a Gerbings heated jacket, I wear merino wool long underware and thats about it. This last year I've put on close to 5k on the outfit and never been wet.
In warmer weather its just a t-shirt the jacket I leave unzipped and a large vent across the back gets rid or the air
I believe the material used is the same as the Rukka Merlin
I like the leather because it's quieter to ride in