I use the original band from my 38mm S3 on a 40mm S6, it definitely fits perfectly between them But I bet they omitted the original 38/42 sizes from that list

I use the original band from my 38mm S3 on a 40mm S6, it definitely fits perfectly between them But I bet they omitted the original 38/42 sizes from that list because now it overlaps with 42mm being the small size of S10 Sizing the watches by mm instead of naming them small/large feels like a weird relic from the original apple watch launch when it came in a $10,000 gold version and Ive was positioning it as a fashion item