Where to start?
How about airport security? No TSA person has ever tried to remove the sleeve from the laptop before it goes into the X-ray machine; it's so thin, why bother?

How about weight/bulk? It weighs almost nothing and adds a minimum of thickness to the laptop while in another bag.

Protection? The neoprene edge along the bottom protects it when you drop your shoulder bag or backpack. The other edges don't need the protection quite as much, so why bulk it up unnecessarily?

Screen cleaning? I have often used the sleeve to wipe down the screen on my laptop (if I don't have a more suitable cleaning wipe or cloth).

Fit? Perfect. I just got two of these for the 2019 MacBook Air and the current 13" MacBook Pro. Both fit like a glove; tight enough that it won't slip off on its own, but with enough stretch in the material that it's easy to remove.

This sleeve is great for what it is. If you are looking for something minimal that will protect your laptop from scratches then this is it. If you are looking for drop protection you may want to look at some of the other products. It works great for my needs and bonus is that you can order it vertical. I can charge my laptop without removing it from the sleeve!

I just wanted a simple sleeve. This fits that bill. No other flaps, buttons or other fasteners. This is my second one of these. My only gripe is that it seems a bit expensive.

I liked the design and quality of the products.

Great way to keep your Mac protected while looking good. My girlfriend who typically doesn't like spending extra money on these sorts of things got one and she loves it. It'd feel weird throwing my Mac into my bag without one of these.