Great for the price
This was the least expensive shade I found with good reviews. It fits against the inside of the windshield snugly with a notch to go around the mirror stalk. It is rigid enough when open to stay in place but folds up accordion style fairly compactly. It seems well-made of what feels like a foam(insulating?) core sandwiched between the silver and black facings with a fabric piping stitched around the perimeter. It blocks the sun and a lot of the heat as well. Happy!