Car Seat Cover for Freezing Temps?

Enkhzaya

Hello!

We live in Mongolia and it gets super cold here, minus 40 celsius at nights and early mornings. Yeppp Brrrr. So I have been doing some serious research on car seat covers for cold weather. The safest kind are the shower cap style, so that they don’t interfere with the car seat safety. I have narrowed it down to what seems to be the most recommended styles, but I am still coming up relatively empty handed on how warm each style may be.

Can anyone shed more light on how thick or thin the following styles may be?

-Skip Hop Car Seat Cover

-JJ Cole Cover

-Jolly Jumper Arctic Cover

-Cozy Cover

TIA 😘😘😘