I got to test the Caddis Northern Guide zippered waders and was quite impressed. I liked the exterior texture of material, tough, yet had a slight 'fuzzy' feeling when you brush your hand over it. It didn't 'swish' when you walk...you know, that annoying nylon-ish sound. Reinforcement in all the needed areas (knees/seat) and no inner leg seams to split out when you climb over a log or boat gunnel.

I had a Large/Tall, and felt it fit my 6'2, 190# frame well, without too much excess bulk. Neoprene booties fit my fit well too (12's).

Don't know how these may relate to the ones your wife is interested in, but they did well, especially for the price.