These vintage western pants were made by Mesquite Niver Western Wear, Fort Worth, TX.  They are electric blue polyester and have a heavy reinforced waistband. They are marked a size 38
Waist: 19″ (doubled = 38″)

Inseam: 31″Outseam: 42″

Rise: 11″

Cuff: 9-1/2″ (doubled = 19″)