AntiSlip: There are a lot of strong suction cups at the bottom that cling very well and keep the mat in place at all times,no lifting or shifting at all. Providessafetyfor babies, toddlers, kids, children and seniors when theyre bathing. Perfect Size: Extra long and large, size is at 31.5x15.75 inches. It covers most of the bath tub. Its also heavier and thickerthan other mats.Great for homes, hotels, hospitals, assisted living facilities, gyms, saunas, spas and showers. Natural Rubber and Comfortable: Its made of heavy duty rubber, this bathmat is very soft and it does not hurt your feet in the least. Its also very easy to clean. CobblestonesSurfaceandFantasticColor: Cobblestones giveyouboth mini foot massage and tiny feet traction. The textured surface also makes a nice cushion whenyouretaking a long bath in the tub.Pretty grey color matches your bathroom nicely. NOTE:Beforefillingthebathtubwithwater,putthematinthebathtub,thenpressthemattomakethesuctioncupsexpeltheair,thiswaycanmakethematsticktothetubsurfacefirmly.NOTE:Machine Washable, for your health, please clean it regularly.