Heavyweight 100 percent vat-dyed sulphite paper has longer stronger fibers which is tough enough to take scoring folding and curling without cracking and tearing. Its superior fade-resistance keeps projects brighter and fresher longer. Acid free for less fade. 50% recycled fiber content and recyclable. Create something great with heavyweight construction paper from Tru-Ray. Heavyweight 100 percent vat-dyed sulphite paper features longer stronger fibers that are tough enough to take scoring folding and curling without cracking or tearing. The paper s superior fade resistance keeps projects brighter and fresher for longer. Pack of extra-large construction paper in white color includes 50 sheets measuring 24 x 36 inches each.