Strathmore 400 series Heavyweight drawing pads contain one of the most popular papers previously only available in large sheets and rolls. Cream colored, 100lb (163 g/m2) paper with a Medium tooth surface has slightly more texture than the best selling 80lb 400 series drawing pads. Durable enough to stand up to repeated erasing, and provides a greater depth of tone. Excellent for use with pencil, colored pencil, charcoal, or sketching sticks. Wire bound, Acid free, Made in the USA