Earlier this year, we stumbled into a new company – Foehn – that was looking at entering the running game. We checked out a few items this year – both in their running sphere and a lightweight fall top, but are back again for a new option now that the weather is officially cold . Read on for our review of the Elfin PrimaLoft Insulated Jacket and Keats Merino Neck Warmer. More about Foehn: The…