its definitely warm and breathes well. Its not thick like a big down comforter but we keep ours in a duvet cover which makes it look thicker and heavier. Be warned when you wash it as it will clump...badly. Huge disappointment. I didnt use tennis balls when drying it as Ive never had that issue with down alternative comforters so I cant say that would have made a big difference. The manufacturer could certainly have done a better job by box stitching or providing washing instructions to prevent that.