Winter coats

Hello ladies! I have an almost 1 year old and winter is creeping up. He doesn't have a winter coat and the only store we have is Walmart and they have 2 kinds in his size and I'm not a fan of them they seem too thin. Other stores/malls are an hour and a half away so my question is what's the best winter coat? What's your favorite? I would like to order from Amazon but I'm willing to make the drive to a different store but not wanting to spend a lot! Thank you!