ENHANCED RUBBER BACKING - Our 3/8" option has a waffle-tread rubber coating for increased gripping power. DURABLE CUSHION - Pad contains 32oz of felt and 20oz of rubber per square yard. Thickness is approximately 3/8" throughout (actual thickness may vary slightly in production). Heat pressed felt adds soundproofing and insulation. Non-abrasive to protect rugs and floors from scratches. Adds extra comfort underneath rugs. MADE IN THE USA - 100% recycled felt needle-punched to prevent moisture buildup. Odorless, low VOC's, and hypoallergenic. PROTECTS FLOORS - Can be used safely with Hardwood, Laminate, Stone, Tile, and other hard surface floors as long as flooring manufacturer's instructions are followed and proper curing times are met. TOTAL SATISFACTION - If you are unsatisfied with your purchase, please contact us (via message) and we will be happy to assist you.