“I love these tops, I have 3 of them now. They are cozy and warm. I use them for cold running days and dog walking. Primarily with temps below 35 degrees F with a light jacket over them. I ordered a size up this year as I wanted a looser fit from a large ot XL. I usually wear a size 12 in regular shirts for context. I will use the tighter fit for running and the looser fit for wearing out and about. These will keep you warm with just a light jacket down to 25-30 degrees depending on activity level.”