EarthView Premier Binders by Aurora GB feature a 100% recycled heavy duty paperboard core with 70% Post Consumer Waste covered with 100% Landfill Safe polypropylene, ultra clear polypropylene outside overlay, an EZ Touch 3-ring mechanism, and inside pockets with a die cut for a business card. These are top quality binders that will last and last. No heat warping or cold cracking, and print won't stick view page ensures good looks and real protection for your documents ongoing. Easy insert thumbhole makes it easy to pull out the binder you need. Be kind to the environment while you're keeping your office organized and functioning smoothly.