Heavy 76 lb. 100% vat-dyed sulphite with longer, stronger fibers. Tru-Ray® Construction Paper is tough enough to take scoring, folding and curling without cracking and tearing. It"s superior fade-resistance keeps projects brighter and fresher longer. Available in 35 stay-bright colors. 50 Sheets per package. Acid free. 50% recycled fiber content and recyclable.