I'm really happy with my new Ottomanson Rubber Stair Treads. Each tread is approximately 10 inches wide by 30 inches long. Great tread, great traction. Black rubber, easy to rinse off with water, Collects sand,dirt water etc and still keeps you safe going up and down the stairs. Easy to apply. We put them on our outside front deck, for safety purposes with varying weather conditions. I Don't know how we even made it without these Rubber Stair Treads, We think their great and have neighbors already asking where they can get some.5 per package. These make a huge difference with weather in Wisconsin.