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, SKU: EDRE31024