The Coffee Husk Mug and Coaster are made of residual crop waste, husk from coffee plantations. These mugs and coasters are part of the nature that surrounds us and we harvest them one more time for a second more exciting life in our beautiful homes. The natural raw material is sourced from Indian farmers and turned into mugs and coasters in an energy efficient manner. It is suited for both hot and cold beverages and have an extremely earthy and natural look and feel. - Each bio-based mug re-purposes agricultural waste of coffee husk sourced from Indian farmers. They are sustainable and eco-friendly. - Non toxic (BPA free), produced using materials tested for food safety by TUV Rheinland Germany. - 100% recyclable and reusable. - Unbreakable, chip-resistance and microwave safe for reheating purpose and freezer safe. - BPA free and contains no hazardous substances.