80 Sheets Brown Chipboard 60 Point Extra Thick 4 X 4 Inches Craft & Scrapbook Size .060 Caliper X Heavy Cardboard as Thick as 15 Sheets 20# Paper Extra Heavy Chipboard 60pt (point) or .060 (.06 inch) thickness = 1.524mm Backing for notepads, photos, and prints Make your own albums, frames, displays, covers, backs, boxes and containers Protect your shipments and storage of keepsakes and papers 100% recycled clean fibers