The JJ Cole Bundle me is a zipper cover that lines the inside of the carseat and zips over the top, keeping your infant warm and snug without having to go through the trouble of putting a jacket on her. Have you tried putting a jacket on your infant and then placing them in their infant carriers? It is hard and your baby looks all smushed and uncomfortable.
The zipper makes it easy to unzip and remove if the weather becomes warmer, only leaving the bottom lining. I have also unzipped the top layer to use as a blanket to lay my son on when I forgot to bring a blanket to lay him on when visiting friends or traveling.
I really love this product! I give it 5 out of 5 because it is easy to use, keeps your baby warm, and not to expensive (under $40.00). You can find them even cheaper on Craigslist!