This jacket is exactly what I was looking for.  I needed a lightweight jacket to keep off of me without being too insulated or bulky.  I believe in wearing multiple thin layers so that I can balance out my clothing during the day as needed, rather than ending up too hot or too cold), and a bulky jacket isn't my cup of tea.
The weight of the Glennaker is perfect, very light, breathable, and the hood folds up into the collar.  I am very happy with this purchase.
I am 6' tall, 195 lbs, average build, and the large fits me fine, even with a sweater on underneath.