I feel like the sizing run true to size so long as it says “regular fit”… That being said, if it is athletic fit or performance fit, it runs a size small. In my case, need a bigger dude, so if it is performance, fit, then I got one size larger. So on most of her gear, regular fit coincides directly with my normal size … I hope that makes sense!
What size do you normally go with that they offer? I would start there, get it and if you need to change the size, they have a super easy return policy I just take a little bit more time… Or re-order the size you need, and just return the original order after. That’s one of the other great things about using the Amazon links that I provided in the description is using Amazon to purchase allows you to return and exchange much easier. The returns also tend to be more cost-effective through Amazon versus you using your own money to ship something back!