Better Rug underlay pads will help extend rug life and protect flooring and carpeting. The thick padding will keep area, scatter, bath, utility rugs, and mats from sliding on hard surfaces like ceramic, tile, or wood. Rugs pads circulate air, preventing mold and mildew buildup. Makes rugs easier to vacuum. These 1/4" thick pads are made from a specially coated PVC compound. For indoor use only. Can easily be cut to any size.