Ocean Bound Plastic (OBP) is abandoned plastic waste within 50 km of coastlines or waterways in areas with poor waste management. It accounts for about 80% of plastic marine litter and poses a high risk of entering the ocean.. OBP is collected and recycled into usable material. As our current stock of cards run low, we'll replace them with OBP material, identifiable by "Made from 100% recycled plastic". For more details on OBP material, please contact us.