Let me start by saying I really wanted to love these SHEEFLY car window shades. The idea of a retractable, breathable mesh shade that blocks 98% of UV rays sounded perfect for my daily school runs with my toddler in the backseat.

The good: When they work, they work well. The material does an excellent job cutting glare without making the car feel like a cave. I appreciate how quickly they retract with the button mechanism - it's satisfyingly smooth when new. The size fits most side windows as advertised, and the suction cups at the top are surprisingly strong.

The bad: Oh boy, where do I start? Like many reviewers experienced, the adhesive parts are a disaster. Within a week of summer heat, mine left sticky residue on my car doors that took serious effort to remove. The bottom attachments constantly failed, causing the shades to flap annoyingly at highway speeds.

Durability is another concern. While one shade still functions after two months (with frequent reattachment), its partner broke when my preschooler accidentally yanked it - the retraction mechanism just gave out.

Final verdict: These are decent sun blockers when they stay put, but the design flaws make them frustrating for daily use. If you're handy and don't mind modifying them (like trimming brackets as some reviewers did), they might work temporarily. But for hassle-free sun protection, you might want to invest in higher-quality shades or consider window tinting instead.