Disposable paper cups are cups made out of paper and often lined with plastic or wax to prevent liquid from leaking out or soaking through paper. They can be made by recycled paper. They are the least expensive cups and are widely used around the world. Paper can be recyclable; however paper cups must be coated with a polyethylene plastic (most common used coating) to prevent damage to the cups from hot beverages. Which increase a lot difficulty for recycling paper.