Best pants in the world be cautious of sizing says us but is uk - Rab Downpour Plus Pants - Women's

Loved these so much I had a pair i outgrew during covid. They were a medium. So I decided to buy both the US 14 and 12 on campsaver site.. to be safe. Well, the sizing on the website said it was a US size, but it arrived as a UK size. Apparently in the UK they size it up so that meant the 14 came as a US large size 12 and the 12 came as a US med size 10. I typically fit into a US size 12 to 14. So the large fit but was snug. So now I am ordering my 3rd pair (16) hoping the xl will give me some room to add a base layer underneath. The sale said final so I can't return my prior two purchases, but I want to warn you so you don't have to waste your money like i did. But these are amazing pants. U love how they zipper all the way on the sides. Makes getting in and out of very easy and convenient. They hold up their stretch and are completely waterproof. A great investment.