I have a macbook pro m1. The case is really well finished and waterproof like neoprene, but I haven't tried submerging it.
The case is in very good condition after more than two years of use and the magnetic closure still works perfectly. I recommend just comparing a MacBook pro m1 2021 vs yours and see if it's the same dimensions in this case yes.
Hello Froh_do, The case is very snug and that's what makes it so good. For 3 years and intensive daily use as a nomad worker, it's been perfect. I have a MacBook Pro 13'' from 2020, 305x213x18mm.