Speedmaster Moonphase (two counter 44mm) rubber strap recommendations

Hello-I am hoping someone can recommend a rubber strap for this watch.its a 44mm speed master moonphase (2 counters). It’s 21mm lug and I’d preferably like something that has a seamless fit with a curved edge. I tried the rubber b strap but it does not fit the watch well and ends up being awkward. I also tried some nato straps but they don’t fit the piece well as it ends up being too high on wrist. Can anyone recommend another brand?
Thank you!