Naturesmart™ mouse pads do not use petroleum-based materials such as EVA, PVC, or PU. No glue or harmful chemicals are used to attach the soft-cloth surface to the non-skid base. This naturesmart™ mouse pad has an Eco-base™, a non-skid base made with 12% natural rubber, and 60% post-industrial recycled rubber. - Soft -cloth top for maximum comfort and tracking - Non-skid Eco-base is made with 12% natural rubber and 60% post-industrial recycled rubber - Glue-free assembly does not use or create any harmful chemicals