I have never heard of Jackson jeans before receiving these but was quite impressed with the quality. I would put them in a category with Levis. I gave them to my son with reservations. There was no length measurement. Still they fit him quite nicely. He looked great in them even if it's his mom talking. He does outdoor work and wore them all day. He said they were comfortable and easy to work in. They look quite sturdy. They seem to be an excellent buy.