Everything worth knowing before you buy — in five minutes.
Measure your windshield's width and height, then pick a shade that covers as much glass as possible without buckling. Most umbrella shades come in standard (~120 × 65 cm) and large (~145 × 80 cm) sizes. When in doubt, size up — a little overlap onto the pillars is fine, gaps are not.
The reflective coating, not the fabric thickness. Look for terms like "titanium coating," "reflective silver layer," or "UV block coating." Multiple layers help, but a single good reflective layer beats three layers of plain fabric.
Umbrella shades win on speed (seconds to deploy), storage (folds to nothing), and fit (the curved shape hugs the glass). Accordion shades are cheaper and lie flatter, but they're fiddly and wear out faster at the folds.
Umbrella shades are near-universal — they don't need suction cups or exact dimensions. They wedge between the windshield and dashboard. Works on sedans, SUVs, trucks, and hatchbacks. Only very sharply raked sports-car windshields need a second look at sizing.
Twist, collapse, and slide it into the included sleeve. It fits in a door pocket, beside the seat, or in the trunk. The whole point of the design is that storage is effortless — if you're wrestling it, you're doing it wrong.
Tint helps with UV but barely dents heat buildup — a reflective shade still makes a big difference. If you park in a garage all day, skip it. If your car sits in a sunny lot, this is the best $15–40 you'll spend on it.