Ring binders are must have organization systems for schools, offices, and homes. There are many binders available in market which serve the purpose; however, if you are on the lookout for a more sustainable product, the heavy duty biobased 3 ring reference binders with spine mounted label holders are the right choice for you.These plant based / biobased binders feature a clear label holder with thumb notch and insert card to make binder organization a breeze. Order multiple binders to create a custom desk reference system for weekly or monthly office reports, multiple classes at school, or other unique personal or professional projects. The biobased reference binders are durable, well-constructed and have both biobased and recycled properties that make them a great sustainability solution. These USDA certified binders are made with at least 59% biobased material and come with a cover made of 25% plant based renewable plastic. Biobased content is carefully tested using ASTM D-6866 standards. The first and only biobased reference binders are durable and can be used for storing documents and loose items with considerable ease for the perfect counter organizer. Features locking gap free and easy to open D-ring with simple single touch booster. Rings are mounted on the back lid which allows pages to lay flat and prevent wear and tear of the documents. Locking D-rings / slang rings also hold up to 25% more sheets than standard round rings. Such a construction also adds to a sleek, clean appearance with no-rivet spine. The rings are sturdy to withstand years of use and easy to open and close. It features two clear inside horizontal pockets for additional storage and organization of loose documents and non-punched papers. Each pocket provides enough space to hold notes, photos, business cards, or full-size pages that will be punched later. Binder Type: Ring; Binder Style: Non-View; Binder Size Capacity: 4"; Binder Sheet Capacity: 800.