Comfortable: Our anti-fatigue kitchen mats are ergonomically engineered, 2 pcs, the size is (17 x 28 inches and 17 x 48 inches). 12mm thickness. The comfort standing mat with a runner is made of high-quality and premium PVC materials, the extra thick mat provides comfortable support to ensure that you are able to stand comfortably while working in the kitchen or at any workstation. Anti-slip & water resistant--the top of the anti-fatigue gel mat is designed with an attractive texture while the bottom is made of a non-slip material. Beveled edges help prevent tripping. The memory foam kitchen floor mat may be used on multiple surfaces (tile, wood, ceramic, marble, etc.). [warning!!] Open the mats fully and place them on an even, flat, dry floor. Water under mats may result in slippage. It must be placed on a dry surface during use. Easy to clean & durable--our nonskid washable kitchen mats are easy to clean; simply wipe dirt off with a damp cloth. The waterproof surface ensures long-term durability. The kitchen mats are made of premium PVC material that is phthalate-free, latex-free, and odor-free. The eco-friendly mats are constructed with premium strength material to ensure that the mats will keep their shape, even with extended and heavy use.