Hard plastic (not like rubber or good quality elastic trays). It is slippery (if you put, for example, car chains with hard packaging it slides a lot in the trunk). It is shiny (like you sprayed it with glass cleaner). It is almost indestructible material and relatively thin. Applicable to the entire trunk floor. Very economical compared to others, but I would prefer to have chosen a material of better quality if I had seen it up close, but it definitely does its job relatively and helps any liquids stay inside and not dirty the carpet and the entire space. It is an economical solution, but I would recommend you to put something more in order to get something of higher quality.