John,
I weigh 204 lbs, and my waist measurement is exactly 40". However, if I wear a size 38" street pants they are almost to big. Don't laugh to hard, but I have a small tush (butt

) so that probably has something to do with it. I would recommend you purchase the XL size. I purchased the Large, and according to the product size chart, I'm right on the boarder of either a Large, or XL, and with a smaller tush, I opted for the Large size Low Rider pants.
When it comes to vinyl pants of ANY type, I only buy from KINS, or Fetware. I've bought all different types of vinyl pants over the years from every leading manufacture and found the
best vinyl pants either lined, or unlined at KINS, or Fetware. Three years ago, I purchased custom made (made to fit) vinyl pants from Fetware, and the Low Rider pants that I just purchased from KINS have a better fit. Most people don't know they can purchase made to fit vinyl pants, but Fetware will accept these orders at NO additional charge with a minimum order of 12, or more pants. Since I wear vinyl pants all the time, buying a dozen pants at one time is no big deal since I tend to replace them every 6 months or so anyway.
I have purchased Low Rider vinyl pants before, but for some reason, I never purchased this style (40300V) pant before. I'm almost certain the Large would be too small for you since your waist is 42", so I would recommend buying at least one pair of the XL size and see what you think. I don't know how I missed not buying these pants until now.
