I bought this for a Toy Poodle weighing 2.5-3 kg, but it was only tried on and never used! I'm selling it because my dog outgrew it. I think it's recommended for dogs around 2.5 kg! It didn't fit my 3 kg dog ( ; ; ) It's labeled as size S, but I think it's closer to 2S (SS)! It's made of fleece fabric for winter! How about it for this time of year? (^^)