I bought the Lykus MA310 designed for the Air 3 before they modified the foam for the Air 3S.
However, the Air 3S fits. It was snug at first but the foam did adapt.
Now the drone slides in and out with ease.
The case thickness provides space for...
I really, just me personally, find pre-cut foam cases a waste of money. If you upgrade of sell your drone, they have few alternative uses and the foam will not fit anything else. They do not really increase the sale price of your drone in the end...