XCR is a wonderful flooring product from the company Expanko. It is made of a mixture of recycled rubber and cork including recycled tires and post-industrial waste. XCR is a colorful, waterproof, durable flooring option. It is also slip-resistant, fire-resistant, and quiet and comfortable to walk and stand on. There are 27 standard colors to choose from including earthy neutrals, jewel tones, and brights and bolds.