Is that warm enough for winter in Europe...
Is that warm enough for winter in Europe (Paris) ?
For example a tshirt with a hoodie at 30�F, is that good ?
Should i prefer 100g Primaloft instead of 60g ?
too many variables to give a definitive answer, but if you are looking for standalone static warmth for low activity endeavors, this piece may not work for colder days (20F or less). However, for 30 degree F, you will probably be OK. Alot depends on your activity level, wind, moisture, etc., but it is a super nice jacket!