Had TNF named this the Denali full zip 300 sweater, no one would bring up it's lack of windproof or water resistance as a flaw. As a sweater, it's my go to mid layer. I've worn this through out the tri state area, UT, ID, CO, NC in winter/fall seasons ranging from 10°c to -20°c & it's suited me fine while wearing it as a mid layer with suitable weights of long sleeve polypro shirts and a gortex shell or 800 fill jacket + shell (all depending on the circumstance/weather), even just a leather or jean jacket would suffice in spring & fall. Now as a go to outer layer... Only in the late fall and early spring, makes a great lounge "jacket" for chilly windless/rainless days/nights, but never will I consider it a (nor should anyone else) piece of "outwear". Think of it as a full zip sweater at $165 and you'll find it's exactly that... A reliable, durable fleece sweater with a relatively high price tag, but then again There are $165+- Lacoste sweaters that I would expect to be nowhere near the performance standard of the TNF Denali.