Here is the review I posted on the Patagonia website.

I know these pants are supposed to go under my waders, but I doubt they will stay there. Here in Virginia, we are fortunate to fish and guide year-round. Last year my go-to winter jacket was the Tough Puff Hoody. When I saw these Tough Puff Pants pop up on the radar screen, I figure they would be just the ticket for wearing under my waders. And, of course, they are. But, as soon as I put them on, I knew they were likely to see more daylight than the inside of my waders.

Here’s the deal. Winter weather here in the Shenandoah Valley is changeable. One day it’s 19 degrees at 6 a.m., and the next day it’s 30 degrees. Each morning, usually before sun up, I take my dog out for a stroll as the first cup of coffee is brewing. We go regardless of the weather. Not having to do more than pull on warm, weather-resistant pants (thanks DWR finish) is a joy. Truth be told, most of the time, I keep them on all day. They are not only comfortable, but they are also good looking, so I don’t mind running errands in them. The stretchy fabric means it moves when I do inside or outside of waders, enhanced by the gusset crotch and articulated knees. The durable face fabric resists snags and tears from working around the house or yard.

The deep from pockets are one of my favorite features. Deep front pockets mean things stay put and don’t go missing when you climb in and out of your vehicle or sit and stand up. If you have waders on, you will appreciate the opening’s angle; it makes access to whatever is in them when you do the contortionist thing when you have your waders on. If you know, you know. A few other things I like are the zippered back pocket to keep my wallet secure, the built-in belt to snug them up when loaded with stuff in the pockets, a zipper fly for when nature calls and tapered ankles, so they slip into the waders or boots without bunching.

Can’t think of anything I’d change. They work as advertised.