Knight Quartz Flooring is a natural product, consisting of highly-renewable natural quartz sand. Washed and cycled through dust filters, sand enters into the manufacturing process as clean, pure raw material. * 3000 PSI (strength of concrete, flexibility of vinyl) * 15 year warranty * Indent and tear resistant on the floor * Huge cost savings on maintenance * GREENGUARD Children & Schools certified Over 70% of the final Knight Quartz Flooring product consists of all-natural quartz sand and may contribute to 4 LEED Points!