Apple Watch 4 wrist strap

I am looking for a Apple Watch strap that fits a wrist of 240mm. Does anybody have any ideas of how I can get this? I have seen a stainless steel strap with added links at the Apple store but this costs £550 plus £50+ for the 6 extra links tho fit my wrist. Please, if anybody has any ideas please point me at them.

Earnie