2023 Polo and Softshell sizing

Hi. First time I'm going to buy Mercedes clothes and would like to know how is the sizing. Should I buy my size (M)? or do they run small/big?

I have the Red Bull 2022 Polo in M, RB 2022 softshell in M (runs a little bit tight). Alfa Romeo 2022 polo in L and 2023 McLaren in L (a little bit big). Do someone have this same clothes that could compare with the Mercedes sizing and help me decide what size should I pick? Thanks.