Shevron Window Sox

Blinds don't get much better than this - a product developed in sun-drenched Australia. The latest Sox cut out even more light than previous versions, and were among the best performers on test. What's more, as they slip over the entire door, you can still open the window. However, the Sox were a tight fit and, as they're custom made for a wide range of vehicles, you may need a set for each car you use.