Chemically benign. Plastic cover allows for full waterproof design. Environmentally friendly paper made from natural stone. Paper is extremely resilient and functional - waterproof, tear resistant, and smudge proof. Provides an unusually smooth writing experience. Once you write on in the Pebble Stone Paper Jotter you will never want to write in any other notebook again! The spiral bound, 3-1/2" x 5" design holds 68 lined stone paper pages that are made from natural stone, environmentally friendly, and chemically benign. This paper is extremely resilient and functional. It is waterproof, tear resistant, and won't smudge. On top of that, it provides an unusually smooth writing experience and has a soft feel when handled. The plastic exterior can be imprinted with 1 color logo or message. The Pebble is perfect for schools, seminars, and any environmentally conscious company.