not warm

bought this vest to supplement a Patagonia fleece vest i have. To my surprise the vest is not very warm, does not feel like i have a fleece vest on! Otherwise the fleece has a nice material and nice look to it but it is not doing what it is supposed to (keep me warm) & also as others have mentioned in the posts here it runs a size larger (i bought an L but should have gotten an M - for all my other stuff i have Ls)Hope this helps.