Incredible fit.  My pair says 75 percent cotton, 25 percent polyester.  Made in Mexico.  I've been looking for a good pair of carpenter's jeans forever.  These are definitely the best I've found.  The size is perfect.  The only problem I found was that my smartphone would not fit in the side pocket.  After a bit of stretching, it goes in nice and snug.  PERFECTION!  Highly recommended.