Columbia fleece: http://www.sierratradingpost.com/columbia-sportswear-steens-mountain-fleece-jacket-for-infants~p~2959r/?filterString=kids-clothing~d~2217%2Fsizefamily~size%3B18m%2F&colorFamily=18

LO is 10 months old. I know they say not to do big puffy jackets and carseats. Do you think this one will work?