floorMuffler® Flex is a high performance Acoustic Rubber Underlayment for use in residential and commercial flooring applications. As part of our Premium Collection, floorMuffler® Flex is the ideal choice for most Sports Facilities & Arenas, Weight & Locker Rooms, Health & Fitness Centers, Animals Stalls & Trailers, Hospitals & Schools, Garages, Restaurants & Hospitality Applications and more.