Strathmore 400 series printmaking cards are a natural white paper with a high Alpha cellulose wood fiber content. This makes them suitable for absorbing large amounts of ink and more durable than Regular creative cards. Medium-textured surface and ideal for lithography, intaglio, screen printing, and relief printing. Full sized 5 inch x 6.875 inch 280 G/M2 weight paper with 5.25 inch x 7.25 inch 104 G/M2 weight envelopes. Ten cards and envelopes included, acid free. This item is manufactured in United States. Strathmore 400 series printmaking cards are a Natural white paper with a high alpha cellulose Wood fiber Content This makes them suitable for absorbing large amounts of ink and more durable than Regular creative cards This item is manufactured in United States Product Dimension 1.0L x 7.0W x 8.0H