INDOOR AIR QUALITY ethos was designed with human health as a top priority. We use safe chemistry and people-friendly solutions to create a low VOC flooring that lets you breathe easy. ethos Modular is Cradle to Cradle Certified™ Silver v3.0, the first of its kind in North America. [Stands up to subfloor conditions of 15 lbs MVER, 98% RH and 11.0 pH. Passes 10,000 impact moisture penetration testing.] TIME-TESTED INNOVATION FOR THE FUTURE OF FLOORING