Jersey

ever worn a pair of breathables?

Breathables are better in every circumstance than any other wader material.

4 years ago I thought i'd be fine up on the Hoh in March in my simms neoprenes problem was i went bushwhacking into this spot and worked up a good sweat doing it i froze the rest of the day inspite of all the warm clothes and the neoprene. In a northwest winter to stay warm you have to stay dry. nepprene does not do that if you sweat nor does nylon.
Then there is the summertime on the Deschutes hike 2 miles up the river before light fish till the 11 am the hike the 2 miles back out in the blazing sun. no matter what your wearing under your nylons you'll be sweating and roasting and again wet!

breathables keep you warm and dry in the winter and at least dry in the summer even if you sweat badly nothing will keep you cool when it's 95:)

if you are comfortable in your nylon waders by no means should you ever wear breathables. but once you spend an hour in then your nylon waders will be in the trash so fast you won't believe it..