Awesome pants despite confusing sizing on campsaver website - Outdoor Research Ferrosi Pants - Women's

I love these pants and wish to have every color (I have blue and mud now but still wish for more). I'm 5'7" 123lb athletic build and size 2 regular length fits pretty well, even with some extra room for layering. They are perfect for trekking/climbing, very stretchy and durable material and lots of good pockets!!! The mud color I got from Campsaver was listed as waist size 25 inseam 29.5, I took a chance with it and gladly find out that they are indeed size 2 regular length :)