I ordered the large for my 8 pd. Frenchie puppy. Very nice and warm for brisk mornings, my puppy loves it! it's non restricting and cozy. Perfect for fall. Still has a little room for growth.Nice jacket but it runs on the larger side. Had to return.Nice, but a little restrictive for my puppy’s front legs.I have an older dog and we live in Oregon. The nights have been cold and the dog has had trouble sleeping. When I put the coat on him he was very comfortable in it. And for the first time in a long time he slept all night. I know he did because I could hear him snoring. Very good dog coat.This jacket is honestly the best. It's not easy finding jackets for a frenchie. This one fits her arms perfectly, the clips make it easy to put on and off, there's a harness hole and its not too long! The soft inside I can tell makes her cozy. She fell asleep instantly inside and doesn't want to take it off. Highly recommend.No issues with it getting wet, very soft inside and cute as picture but it's a little snug and buttons won't stay closed except the one at the top. I followed measurements so not sure if cut wrong or snaps are too cheap.