The screen guard fits my macbook air 2020 perfectly. I’ve been using this for a month. First day of usage, my eyes had to adjust to the anti blue light filter, where I got super dizzy. But after that one day, no more dizziness or headaches. My eyes no longer get tired easily from prolonged screen time. Another plus point is that the filter gives you privacy. I also like it that it sticks on the screen due to the magnet instead of sticker, which means that I can put it on and off anytime I want. Good quality and value👍 I would recommend for those of you who constantly use your laptop for work or school. Would love to try their iPhone filter soon.