The Odlo Stuff full zip fleece utilises a brushed polyester/wool fleece material inside which is supremely soft and incredibly comfortable as a result.
This isn't a massively technical mid-layer but the natural wool content will help control odour build-up and insulates reasonably well and the polyester in the mix helps the Stuff Ski Pullover breath when you turn the intensity up a notch.
This is a pretty warm fleece, probably on par with a Polartec 200 or 300 so can be put to good use on particularly cold days. The collar comes up fairly high to provide a barrier against the elements and heat can be regulated easily thanks to the full zip.
The styling isn't what you'd call young and thrusting, but it will certainly appeal to some.
