I know "Signature" is Levi's downscale, cheaper line. It uses lighter weight denim and has fewer rivets, and I'm sure they cut a few other corners here and there. But guess what? I really like the Signature pants, and I love the prices. My husband is wearing these now and they look great on him. These are just good old fashioned normal-fitting classic jeans, soft right out of the package and lighter weight for warmer days or more active people. Love 'em.