Car seat covers! These are great for any time of the year. They keep your baby warm, dry, and protected from sunshine. They also keep your baby isolated, making it easier for them to sleep and keeping out unwanted peekers! I have cotton/cotton covers for spring or summer and cotton/minkee covers for the cold winter months. The covers are one size fits all and fit well for almost any car seat. All of the cotton/cotton covers are reversible. The straps have snaps and can be sized smaller for skinnier car seat handles or larger for thicker ones! If you find it doesn't fit contact me and I can custom make one to fit.
This image is an example of how the car seat cover works but is not for sale!
Cotton/Cotton - $25
Cotton/Minkee (not reversible) - $35