Easily one of the best and lightest (335g) jackets we've tested recently,with both great design and good looks, the Target Aero consists of a Gore-tex Active shell fabric with stretch panels through the shoulders and extra breathable Gore Aspre fabric mesh in the back for even more comfort under a back pack, on warm days or simply when working hard. This is also aided by decent sized pit zips.
There’s a fully adjustable hood and the cuffs and hem are also adjustable; about the only downside to the jacket is that it has just one relatively small zipped chest pocket.
If you can live with that and are not on a budget it's well worth checking out.