Hi, Maipenrai!
Yes, I am the inventor of the Car Seat Poncho! The original Car Seat Poncho is two layers of top quality, 400-gram anti-pill fleece with a full length 2-way zipper. Several styles are reversible, so you get 2 looks in one, and they do indeed last 2 or more seasons.
Order a Car Seat Poncho today, and you can have it in
3 days -- without having to drive to find the fabric, find a zipper, measure your child (after chasing your child to get her to sit still), figure out what to cut, cut it, get out your sewing machine, figure out the right stitch and the right tension for fleece, sew it, perhaps have to rip the seams and try again, put the zipper in, try it on your child, etc. etc.
If you are considering making a poncho, calculate not only the cost of materials, but the cost of your time to drive, plan and construct it, and any additional time and cost if you are not happy with the results.
Believe me, I've done it, it's not so simple if you do not sew on a regular basis!
My original prototypes have been sized and proportioned by professional tailors and pattern makers, and sewn by professional sewers who also manufacture for DKNY, Pea in the Pod and Motherhood Maternity. Materials are top quality, and workmanship is first rate. My products are fully guaranteed, and proudly made right here in the US of A.
When you buy a Car Seat Poncho, you are truly getting the safe, EASY way to keep your child warm in the car seat!
Please feel free to pm me with any additional questions! I have an additional discussion of why the Car Seat Poncho is worth the price here:
http://www.carseatponcho.com/VALUE.html