Epson's history spans more than 100 years, with a heritage that began in watch making and led to the invention of the world's first quartz watch along with many other technology "firsts." This long tradition of creating products that are smaller and more precise continues today, with the development of some of the world's most advanced micromechantronics capabilities for ultra fine, high precision processing. 100% cotton rag media with a natural smooth finish. Extremely high color gamut and black density. 90 ISO Brightness. 98% opacity. Acid-free and pH buffered. Size: 8 1/2 x 11; Paper Color(s): Natural; Paper Weight: 17 mil; Sheets Per Unit: 25.