Luckily, the size 4 Braided Solo Loop Apple sent with my Series 6 review unit fits me pretty much perfectly. It's a little tight, but not uncomfortably so, and I think a size 5 it would be too loose.

Apple launched new Apple Watch bands today that have no buckles or clasps, called the Solo Loop and the Braided Solo Loop. They look nice, but because you won’t be able to adjust the length of ...