I have bought two sun shades for the car and both have still let the sun in to the extent that my children are being blinded by the car, it would be better just not to have them.
Please give me some recommendations of ones that actually work (links would help too!)
Thanks
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This thread is a little old now, but if you’ve landed here looking for a car sunshade, we’ve recently updated our best car sunshades for babies and children page with lots of great options, as tried and tested by Mumsnet users. We hope you find it useful. 
MNHQ