Contour-Lock by RUGPADUSA is your solution for sliding or shifting rugs in high-traffic areas. Contour-Lock will add a slight cushioning underfoot and works especially well with runners and hall rugs where door clearance may be an issue. Dense 17oz sq/yd felt and 14oz natural rubber is heat-pressed and needle-punched to a compact but comfortable 1/8" pile. Natural rubber provides a secure surface to stop slipping hazards, while the heat pressed felt fibers lock with the rug''s backing. Together, they keep rugs from shifting, bunching, or wrinkling. Our products are manufactured in the USA from the highest-quality, low-VOC materials with no adhesives, glues, PVC, or added chemicals. Contour-Lock helps to protect your floor"™s finish and is safe for your home and family. Always follow your floor manufacturer"™s recommendations for acceptable materials to use with your floors. Contour-Lock is backed with a 5 year warranty!