Tuscon Slim Fit Pants - 34 Inseam 28 - Charcoal. Enjoy the rugged durability of our popular Bronson fabric in a modern slim fit with the prAna Tucson Pant. Stretch canvas made from 98% organic cotton is triple stitched and reinforced. Fair Trade Factory Certification supports better working conditions for the factory workers who make it, through investment of a premium of each item sold into social development projects.