MATERIAL: Rubber TYPE: Independent modules that come with fixing bolts SIZE: 50 cm x 38 cm x 5 cm COLORS: Black & Yellow FEATURES: All weather easy maintenance: will not warp,chip,crack,crumble or corrode. Extremely Durable: tough enough for heavy traffic resistant to extreme temperature variations, UV light, oils, moisture and damage. Flexible and conforms to road curves and any asphalt or concrete� surface. Easy and low cost: One man installation with basic tools.