The Roll-N-Ride LS Jet Ski Port is a durable, high-quality PWC port that is perfect for storing your Personal Watercraft. The Plastic shell is made of heavy-duty polyethylene, which is resistant to and corrosion and UV. The Roll-N-Ride LS Jet Ski Dock is easy to install and is foam filled with (EPS) which is unsinkable. This product will give many years or use.