The Canson XL series is a line of pads that combines value with performance designed to appeal to art students and enthusiasts from middle school through college. Canson XL pads were developed with art professors who tested their performance reliability with a variety of media. They feature superior construction and heavier weight cover materials than other value priced pads. Excellent quality papers in generous pads offer exceptional value. All XL papers are acid free. The spiral bound pads in the XL series contain micro-perforated sheets which allow for clean removal and use of the full dimensions listed on the cover of the pad. All XL products are manufactured using environmentally friendly sustainable processes. Canson XL Recycled Sketch pads are made with 30% recycled post consumer paper materials. The pads contain 50lb/74gsm paper that is durable for clean erasing and highly opaque.