These NRS splash pants are really nice. I pretty much wear waders 10 months of the year. I'll wear some thermal underarmor tights and boardshorts under the waders so as soon as I get hot I can just take off the shell and be comfy in the sun.
UA Tights
https://amzn.to/31fVX8A
NRS Splash Pants
https://amzn.to/31mAPxv