Works on ALL flooring types: hardwood, tile, marble, carpet, linoleum, etc\u2026 ONE pad. ANY floor. Suitable for use with underfloor heating not exceeding a temperature of 89F. Unlike mesh/waffle type rug pads, the Hold-a-Rug Nonskid Rug Underlay's solid-body fiber composition allows the rug to breathe with the underlay, extending the life of your rug AND floors. The Hold-a-Rug Nonskid Rug Underlay is suitable for use with underfloor heating not exceeding a temperature of 89F. 100% Made in the USA and absolutely skid-proof, will not damage hard-wood floors, and completely odorless Super easy to install, no special tools required, and easily picked up and repositioned. Rug pad should be sized 1-2" smaller than the rug/mat and can be cut with household scissors. For oversize mats, simply affix two underlays side-by-side (no splicing tape is necessary). Assure the floor is clean and dry, then place the rug with the rug pad on it in its proper position.