Mark, I love it! Tell you wife if she's interested in making another I will purchase a pair. 34" waist and 30 length. She should make the waist expandable. 
Also do these have pockets? 
Chau
Thanks everyone, I love it when she finds hobby related bolts of material...she's also got several that are coffee themed

And yes Chau, this version does have pockets...they're very light-weight, almost pajama like but great in the kitchen (ie chefs pants) due to the heat.
I don't know if she bought the entire bolt or not but if there's more material I'm sure she'd love to make another set! I've been trying to convince her to open up a website and develop items that can be sold for a decent price but could be put together relatively easily and in short time. We'll get there someday!
Mark