Comes with heavy weight. This is the heavier duck material, not the lighter canvas, used for brutal jobsite areas where puncture and tear hazards are high. The canvas material is super durable, and breaks in nicely over time. If hot weather is a concern and your jobsite is not as rugged, try the canvas double front pants from Carhartt. Much lighter and more comfortable. You may even be able to pull off wearing them to the office.