All of our PE Gear Knob Covers are made from high-quality polyethylene along with being made with extra care so that they are durable. These are also specially made to fit a multitude of different gear knob shapes and sizes so that they can work with different models of vehicles. These also are made with lightweight materials so that they protect the gear knob with a comfortable grip while also being durable. With the increase of focus on sanitation of automobiles our gear knob covers protect against cross contamination as well as keeping the space uncluttered.