They're stretch corduroy with dark brown backing and beige nap, which is an interesting look. The pattern is from BWOF 04/07, #120. I made a 42, but added to the side seams to make it more like a 44. With the stretch I could have left off the extra, and if and when I lose some pounds, I'll take them in.
I also made them nice and long, just in case they shrink in the wash, even though I pre-shrunk the fabric before I began.
I got the idea of making a menswear style waistband after tossing my son's school pants in the wash - makes alterations much easier! From the outside it looks like this:From the inside it looks like this: