HavaianasMen's Brazil Flip Flop Sandal

For a men size 9.5 is ok to order the 41/42br(9m us)? the reviews are confusing. thanks.

What is the Brazil size on the US size 11?

The coral pair only comes in one size which says “8.5 m /6.5m’s/ 7 m us men’s” so is the shoe size 8.5 or 6.5 or 7??

If I normally wear a men's 10.5/11 in shoes and flops should go with the 9/10 or the 11/12 in Havaianas?